Trillium- BMW Club. Subaru Performance Driver s Club

Transcription

1 WELCOME!! Trillium- BMW Club Subaru Performance Driver s Club

2

3 UTQG: 100 A A 8/32 6/32 UTQG: 100 AA A

4 MAIN TOPICS 1) TOYO MOTORSPORTS 2) RA-1 + R888 SPECIFICATIONS 3) TIRE SETUP 4) GENERAL INFORMATION 5) Q & A SESSION

5 Toyo s Proxes RA1 has been the standard for amateur road racers (club racers) because of its race winning performance and consistency. In the beginning of 2006, the SCCA announced that the Proxes RA-1 would be the Exclusive Tire for the SCCA Club Racing Spec Miata class in National Competition from 2006 through Track testing at Heartland Park Topeka were conducted by the SCCA to rate D.O.T. legal competition tires submitted by a variety of tire brands. The four-day test used an assortment of Mazda Miata racecars and was based on parameters which included durability, consistency, drivability and performance. Ultimately, Toyo s Proxes RA-1 came out on top.

6 The Sports Car Club of America, Inc. (SCCA ) is founded on grassroots motor sports and boasts the nation s most active membership participation with over 60,000 members and 112-regional chapters. The car club sanctions three major forms of amateur competition including road racing, solo and rally.

7 Toyo is a proud sponsor of the National Auto Sport Association (NASA). Serious racers can enter in various forms of competition from road racing to rallying and drifting. Toyo s Proxes RA-1 R-compound D.O.T.- legal competition radial has been the spec tire in many classes including American Iron Racing, Honda Challenge and Spec Miata Challenge. It has been the competition standard for both amateur and professional road racers alike.

8 The SPEED World Challenge is the premier road racing series in North America which features production derived sedans and coupes representing the world s top car manufacturers. Two classes, GT and Touring, each compete in a one-hour long sprint format virtually eliminating the option of making a pit stop for fresh tires. Every imaginable brand of modified sport compact runs in the Touring class. High-horsepower machines such as Porsches, Dodge Vipers and Corvettes compete in the GT class. Both classes share one common denominator over the course of the race, their Toyo Proxes RA-1 tires.

9 Proxes RA-1 Ultra High Performance Racing Tire The Toyo Proxes RA-1 is an Ultra-High Performance Racing Tire developed for the racer who wants Professional racing performance at street tire Prices. The Toyo Proxes RA-1 s UTQG tread wear rating of 100 indicates road adhesion levels suitable for Those applications where winning means EVERYTHING!

10 Proxes RA-1 Cut-Away 4 Stepped Tread Design Steel Belt Construction 3 2 Spiral Wound Cap Ply Steel Reinforced Sidewall (Not on all sizes) 1

11 Product Features - Soft, Durable SBR Tread Compound - Advanced Race-Proven Casing Design - Two High Tensile Steel Belts - Spiral Wound Cap Ply - Steel Reinforced Sidewalls - Heavy Duty Bead Construction - Steel Belt Construction - Steel Wire Reinforced Sidewalls - Ultra Aggressive Competition Tread design - Stepped Tread Design - Tread Depth can be Shaved for Dry Use - Full Tread Depth for Wet Use - Computer Optimized Unidirectional Tread - Jointless Bead Wire - Jointless Two Cap Ply Customer Benefits Superior Competitive Handling Maximum Steering Response Aggressive Wet/Dry Traction Improved Uniformity & Comfort - Two Wide High Tensile Steel Belts Extended Tread Life

12 Styrene Butadiene Rubber (SBR) SBR is now the most common synthetic rubber being used in tires. It is made by polymerizing Styrene and Butadiene together; it is also possible by changing Styrene content and polymerization process to make various types of SBR's with different characteristics. Advantage Disadvantage Processability Impact Resilience Uniformity of quality Heat Generation Aging by heat Frictional Force NR SBR BR

13 RA-1 SPECIFICATIONS 160 F Minimum 200 F Optimum 220 F Maximum Operating Temp : 160 F to 220 F Hot Inflation Pressures: High 30 s to Low 40 s

14 RA-1 Specifications Best Operating Temperature: 160 to 220 (F). Higher than 220 (F) the tire performance will start to go off, although temperatures as high as 300 (F) have been seen before blistering takes place Camber: Negative 2.5 to Negative 5.0 Anything less than 2.5 or higher than 5.0 will create some irregular wear Caster: As much as possible (very difficult with stock vehicles).

15 Shaving the RA-1 All tires have an optimum operating temperature For the Proxes RA-1 it is between F If your tires are running hotter than this range, you need to shave your tires. If your operating temperatures are below or within this range, then you do not need to shave. For most road race use, removing 2-4/32 is recommended. On more abusive tracks and in hot weather, reduce the depth even more. The RA-1 has a stepped tread design depth and the outer grooves disappear at 3.5/32

16 RA-1 SPECIFICATIONS

17 R888 SPECIFICATIONS 140 F Minimum 200 F Optimum 220 F Maximum Operating Temp : 140 F to 220 F (comments from other countries indicates F as optimum) Hot Inflation Pressures: High 30 s to Low 40 s

18 R888 Specifications Best Operating Temperature: 140 to 220 (F) Higher than 220 (F) the tire performance will start to go off. Camber: Negative 2.5 to Negative 5.0 Anything less than 2.5 or higher than 5.0 May create some irregular wear Caster: As much positive (+) as possible Air Pressure: 40psi maximum for track use (depending on weight distribution + under-oversteer req d)

19 R888 SPECIFICATIONS DOT Approved Competition Radial Introducing Toyo s next-generation D.O.T.-approved competition radial, the Toyo Proxes R888. In competition, the R888 s improvements in casing design and the new V-shaped tread pattern improves dry performance. Typical Vehicle Matches: Race prepared vehicles Typical customer Matches: Improved Touring & Car Club Racers + endurance racers Competitive Products: Yokohama A032R /A048 Kumho V700, V710 Hoosier R6 Pirelli P-Zero Corsa Michelin Pilot Sport Cup

20 Features and Benefits- Proxes R888 Competitive Handling and Improved Performance Advanced casing (Rayon 30/35/40 series) and V-shaped tread pattern Stiffer bead construction and wider tread width Spiral wound cap ply (construction may vary by size) Steering Response Semi-slick shoulder area improves steering response Steel wire reinforced sidewalls (construction may vary by size) High Modulus sidewall (30/35/40 series) - consistent elasticity Braking Performance Continuous center contact increases braking performance and feel Tread depth can be shaved to maximize dry traction Wet Traction and Control The V-shaped tread design enhances wet traction and control UTQG- 100 AA A, Enhanced traction rating compared to Proxes RA-1 T- Mode Technology Analysis software for T mode integrates one driving simulation and three tire simulation software modules.

21 Rayon vs. Polyester casing Rayon Polyester Fair strength Good strength Good heat resistance Fair heat resistance Good adhesive properties Fair adhesive properties Good dimensional stability Fair dimensional stability

22 Comparison Test Proxes RA-1 vs. R888 Drivers- Danny Koch & Melanie Paterson Vehicle- BMW 325 Race Trim Tire Size- 225/50R16 Location- Mission Raceway Date- August 9, 2006

23 Conditions Compound- R888-GG / RA-1 =GG Track Conditions Morning Wet/Light Rain & Standing Water Afternoon- Cloudy with Sunny Periods Ambient Temp- Track Dry Morning 19~20 Deg C Afternoon 24~27 Deg C

24 Drivers Comments - Wet Up To Operating Temp RA Laps R888-2~3 Laps Turn In R888>RA-1 Line in Corner R888>>RA-1 Wet Adhesion (Braking) R888>RA-1

25 Drivers Comments- Dry Turn In - R888>>RA-1 Line in Corner R888>>RA-1 Stability- Braking R888>RA-1 Wear Shape R888> RA-1 Wear Rate R888<RA-1 (95:100)

26 Minutes Lap Times Mission Raceway 225/50R16 (BMW 325-Race Trim) Best Wet Best Dry RA1 R888

27 Conclusion R888 Better grip and predictability in wet R888 GG Compound more consistent R888 Very stable under braking R888 gave greater confidence in dry as car felt more stable in turns. Bottom Line R888 is a winner!!

28 Heat Cycling Heat cycling will improve consistency and longevity of your tires. The first heat cycle is the most critical. Subsequent heat cycles do not cause any detriment to the performance of the tire. It is still possible to overheat heat-cycled tires. Assuming you don t do any other permanent damage to them and give them the minimum of 24 hours to relax afterwards, they should be fine for later use.

29 Adjustments Decrease Understeer Decrease Oversteer TIRES Front Air Pressure Increase Decrease Rear Air Pressure Decrease Increase Front section Width Increase Decrease Rear section Width Decrease Increase Front Tread Depth Decrease Increase Rear Tread Depth Increase Decrease Wheels Front Width Wider Narrower Rear Width Narrower Wider Alignment Front Camber More Negative More Positive Front Caster More Positive More Negative Front Toe Toward Toe-Out Toward Toe-In Rear Camber More Positive More Negative Rear Toe Toward Toe-Out Toward Toe-In Anti-Roll Bars Front Soften Stiffen Rear Stiffen Soften Spring Rates Front Rear Soften Stiffen Stiffen Soften Weight Distribution Front Rear Decrease Increase Increase Decrease

30 Understeer Corrections Oversteer Corrections Push, plowing, front tires slide out first. Usually slight understeer is safer. Raise front tire pressure. Lower rear tire pressure. Soften front shocks. Stiffen Bump. Stiffen rear shocks. Lower front end. Raise rear end. Widen front track. Install shorter front tires. Install taller rear tires. Install wider front tires. Install narrower rear tires. Loose, rear tires slide out first. Oversteer can be dangerous, especially at high speeds. Lower front tire pressure. Raise rear tire pressure. Stiffen front shocks. Soften rear shocks. Raise front end. Lower rear end. Reduce rear track. Install taller front tires. Install shorter rear tires. Install narrower front tires. Install wider rear tires.

31 Understeer Corrections Oversteer Corrections Soften front sway bar. Stiffen rear sway bar. More front toe out. Reduce rear toe in slightly. Increase front negative camber. Increase positive caster. Soften front springs. Stiffen rear springs. May need more front suspension travel. Install wider front wheels. Use softer front compound if possible. Use harder rear compound if possible. Remove weight from front of vehicle. Add weight to rear of vehicle. Drive a different line. Stiffen front sway bar. Soften rear sway bar. More front toe in. Increase rear toe in. Reduce front negative camber. Reduce positive caster. Stiffen front springs. Soften rear springs. May need more rear suspension travel. Install wider rear wheels. Use harder front compound if possible. Use softer rear compound if possible. Add weight to front of vehicle. Remove weight from rear of vehicle. Driver may be going in too deep.

32 Understeer Corrections Use weight transfer to your advantage. High Speed. Increase front wing downforce. Too much front brake. Vehicle is TWITCHY at limit and hard to keep ahead of in the steering department. Lower front and rear tire pressures slightly. Suspension may be too stiff. Shocks may be set too firm. Tires may be old or hard. Vehicle may not have enough suspension travel. Vehicle may have a toe problem front or rear. Increase negative camber front and rear if possible. Oversteer Corrections Driver may be getting on the throttle to early. High Speed. Increase rear wing downforce. Too much rear brake. Vehicle slides and is easy to drive at limit but does not corner to full potential. Raise front and rear tire pressures slightly. Suspension may be too soft. Shocks may be too soft. Roll centers may be too high. Lower vehicle. Tires may be too hard. Widen track front & rear.

33 A properly set up vehicle will usually push slightly on corner entry, be fairly neutral at the apex (STEADY STATE) and exhibit slight power oversteer on corner exit. Tight courses may require more oversteer, fast tracks understeer. Items needed: Accurate tire pyrometer, tire gauge, notebook and tape measure. Suspension information books. Note: This is a sample of the methods used to correct various handling problems. Books have been written on this subject. Not every correction will always work as expected. Stiffer front sway bars will, in many cases, decrease understeer because of reduced body roll and better camber control. The best rule is to change only one thing at a time and keep notes. Follow these suggestions at your own risk, we listed them to make your racing safer.

34 TIRE SETUP GENERAL SETUP APPROACH Optimize drive axle first Set up free axle to achieve balance Keep in mind that balance will change Optimize setup for the fast corners Consider the big picture of car setup

35 TIRE SETUP TOOLS Air pressure gauge Pyrometer Tread depth gauge Shoe polish Data Sheet

36 1) Shoe polish (white color) is used to rub onto the shoulder area so you can EASILY see how far you're scrubbing the tires over the shoulder area. As a general rule, if you're scrubbing too far over the shoulder (and therefore starting to scrub into the sidewall area), you should increase inflation pressure to reduce the roll-over. If you're not coming anywhere close to scrubbing over the shoulder, you can probably reduce inflation pressure. Remember that if you're using the RA1 on a street car with stock suspension and alignment, you will almost always "kill" the outside shoulders of the tires, especially the fronts. This is true of front wheel/rear wheel/all-wheel drive vehicles if the suspension and alignment is stock. This is because they are all aligned to generate understeer for safety.

37

38 Max RPM on Straight: 1 U u N o O U u N o O Max Exhaust Temp: 2 U u N o O U u N o O Max Boost: 3 U u N o O U u N o O Rear Aero Setting: 4 U u N o O U u N o O Front Aero Setting: 5 U u N o O U u N o O 6 U u N o O U u N o O 7 U u N o O U u N o O 8 U u N o O U u N o O 9 U u N o O U u N o O 10 U u N o O U u N o O 11 U u N o O U u N o O 12 U u N o O U u N o O 13 U u N o O U u N o O 14 U u N o O U u N o O 15 U u N o O U u N o O Session Log Date: Session: Track: Session Conditions Lap Times Start Time: Air Temp: Track Temp: 1. End Time: Air Temp: Track Temp: Practice Sunny No / Mild Breeze Time Trial Partly Cloudy Heavy Wind Qualifying Overcast Damp / Drizzle Race Night Full Wet Tire Temps & Suspension 12. Left Side Right Side F Temp Temp Temp Temp Temp Temp 15. R 16. O Cold PSI Hot PSI Shock Spring Cold PSI Hot PSI Shock Spring 17. N 18. T Chamber Caster Toe Sway Bar Chamber Caster Toe Left Side Right Side Temp Temp Temp Temp Temp Temp 24. R 25. E Cold PSI Hot PSI Shock Spring Cold PSI Hot PSI Shock Spring 26. A 27. R Chamber Caster Toe Sway Bar Chamber Caster Toe Tire Manufacturer / Type / Size: 30. Misc Info TURN ENTRY EXIT Notes:

39

40 TIRE SETUP THINGS TO LOOK FOR Hot inflation pressure Tread temperature Shoulder wear Tread wear Visual inspection

41 TIRE SETUP TREAD TEMPERATURES

42 TIRE SETUP SHOULDER / TREAD WEAR

43 TIRE SETUP VISUAL INSPECTION

44

45 TIRE SETUP VISUAL INSPECTION

46 From street tire to RA-1= Less Body Roll TIRE SETUP

47 GENERAL INFORMATION Cornering Forces: Toyo compensates for body roll by placing steel reinforcements into the sidewall of many RA-1 + R888 sizes, stabilizing the tire sidewall and reducing tire flex. Jointless nylon belt edge reinforcement strengthen the shoulders reducing flex and irregular wear. Two high-tensile steel belts & a Jointless nylon cap ply further stabilize the tread and provides a more evenly distributed load across the tread effectively giving a larger contact patch.

48 TIRE SETUP Performance Springs Performance Shocks & Struts

49 TIRE STORAGE Avoid direct sunlight Avoid temperatures below 0 Celsius Do not expose to oil, water, or solvents Do not store near ozone producing equipment Should not be stored in an inflated condition *(The optimum is completely deflated)

50

51 Consumer Advisory and Safety Information The tread compound on the Proxes RA-1+R888 is designed to operate under racing conditions To achieve optimum adhesion levels the tread compound levels must operate within a narrow temperature range This temperature range is very difficult to achieve under legal and normal street operating conditions The Proxes RA-1+ R888 tires start with a tread depth which is lower compared to the depth of a premium all season tire The combination of shallower tread depth and temperature sensitive tread compound requires the user to be fully aware of the performance limitations of the tire under normal legal street use The performance limitations are particularly evident during low ambient temperatures or during times of the year when ambient temperatures fluctuate considerably as in the spring or fall periods Wet performance limitations are also evident when the tire is used on damp or wet roads when operating outside the optimum temperature envelope of the compound and when the tire is at less than full tread depth Do not store tires close to the source of ozone producing equipment or where electronic welding is taking place Toyo Tires Canada in no way endorses or approves of any form of street racing or illegal driving activity

52 GENERAL INFORMATION Books: Technical/Setup Race Car Engineering & Mechanics (by Paul van Valkenburg) Prepare to Win (by Caroll Smith) Tune to Win (by Caroll Smith) Engineer to Win (by Caroll Smith) Performance Handling (by Don Alexander) Inside Racing Technology (by Paul Harvey) How To Make Your Car Handle (by Fred Puhn)

53 GENERAL INFORMATION Books: Driving Development Drive to Win (by Caroll Smith) Going Faster: Master the Art of Race Driving (by Carlos Lopez) Secrets of Speed (by Ross Bentley) Competition Driving (by Ayrton Senna) Principles of Race Driving (by Alain Prost) High Performance Driving (by Bob Bondurant) Driving in Competition (by Alan Johnson)

54 GENERAL INFORMATION BOOKS The guy spends four grand on a race car but won t drop forty bucks on books to learn how to set up and drive the damn thing -Caroll Smith

55 SPDA TEAM TOYO RACING PROGRAM SPDA CODE 1 Discount 40% off TOYO SRP Add l 25% chain discount on remaining RA-1s Non-registered members can register online at completion: end of February Registered SPDA members will get a mail out in the spring with all program details TEAM TOYO ADMIN. CONTACT ext toyoracing@toyocanada.com

56 Q & A Session