View Poll Results: What tires (primary) do you use?
Toyo R1R 245
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Toyo R1R 255
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Voters: 225. You may not vote on this poll
STR Prep - Wheels and Tires
01-23-2013, 09:16 AM
#331
Originally Posted by NFRad' timestamp='1358956259' post='22286268
So Street Touring rules state
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14.3 TIRES
Tires must meet the eligibility requirements of the Stock category with the following additional restrictions:
A. Tires must be mass-produced standard production tires designed for normal highway use on passenger cars. Low volume and/or spe- cialty tires will be specifically excluded below.
B. Tires may have section widths up to and including the following: STF, STC, STS, STR (AWD) – 225 mm
STX (AWD), STU (AWD) – 245 mm
STR (2WD) – 255 mm
STX (2WD) – 265 mm
STU (2WD) – 285 mm
C. Tires must have a minimum UTQG treadwear rating of 140 and a minimum molded tread depth greater than 7/32” as manufactured.
D. Tire models must not appear on the following list, which may be altered at any time by the SEB upon notification of the membership.
Pirelli P Zero Corsa
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According to Tire Rack the BF Goodrich G-Force Rivals are at 7/32" tread depth.
Being that BFG and SCCA just extended their partnership through 2014, I imagine this tread legality will be .....fixed, somehow.
P.S 255/40 dropped to $211/tire from $230/tire
Thoughts?
------------------------------------------------------------------------------------------------------------------------------------------
14.3 TIRES
Tires must meet the eligibility requirements of the Stock category with the following additional restrictions:
A. Tires must be mass-produced standard production tires designed for normal highway use on passenger cars. Low volume and/or spe- cialty tires will be specifically excluded below.
B. Tires may have section widths up to and including the following: STF, STC, STS, STR (AWD) – 225 mm
STX (AWD), STU (AWD) – 245 mm
STR (2WD) – 255 mm
STX (2WD) – 265 mm
STU (2WD) – 285 mm
C. Tires must have a minimum UTQG treadwear rating of 140 and a minimum molded tread depth greater than 7/32” as manufactured.
D. Tire models must not appear on the following list, which may be altered at any time by the SEB upon notification of the membership.
Pirelli P Zero Corsa
------------------------------------------------------------------------------------------------------------------------------------------
According to Tire Rack the BF Goodrich G-Force Rivals are at 7/32" tread depth.
Being that BFG and SCCA just extended their partnership through 2014, I imagine this tread legality will be .....fixed, somehow.
P.S 255/40 dropped to $211/tire from $230/tire
Thoughts?
Thanks
01-23-2013, 09:31 AM
#333
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Originally Posted by NFRad' timestamp='1358956259' post='22286268
C. Tires must have a minimum UTQG treadwear rating of 140 and a minimum molded tread depth greater than 7/32” as manufactured.
According to Tire Rack the BF Goodrich G-Force Rivals are at 7/32" tread depth.
According to Tire Rack the BF Goodrich G-Force Rivals are at 7/32" tread depth.
01-23-2013, 09:33 AM
#334
Originally Posted by oinojo' timestamp='1358962011' post='22286553
[quote name='NFRad' timestamp='1358956259' post='22286268']
C. Tires must have a minimum UTQG treadwear rating of 140 and a minimum molded tread depth greater than 7/32” as manufactured.
According to Tire Rack the BF Goodrich G-Force Rivals are at 7/32" tread depth.
C. Tires must have a minimum UTQG treadwear rating of 140 and a minimum molded tread depth greater than 7/32” as manufactured.
According to Tire Rack the BF Goodrich G-Force Rivals are at 7/32" tread depth.
[/quote]
Yes, that's what I'm saying, thanks.
Not that I think this tire would actually not be allowed given the SCCA partnership with BFG through 2014, but just wanted to bring it up and get thoughts.
01-23-2013, 09:47 AM
#335
Originally Posted by nmrado' timestamp='1358965886' post='22286726
[quote name='oinojo' timestamp='1358962011' post='22286553']
[quote name='NFRad' timestamp='1358956259' post='22286268']
C. Tires must have a minimum UTQG treadwear rating of 140 and a minimum molded tread depth greater than 7/32” as manufactured.
According to Tire Rack the BF Goodrich G-Force Rivals are at 7/32" tread depth.
[quote name='NFRad' timestamp='1358956259' post='22286268']
C. Tires must have a minimum UTQG treadwear rating of 140 and a minimum molded tread depth greater than 7/32” as manufactured.
According to Tire Rack the BF Goodrich G-Force Rivals are at 7/32" tread depth.
[/quote]
Yes, that's what I'm saying, thanks.
Not that I think this tire would actually not be allowed given the SCCA partnership with BFG through 2014, but just wanted to bring it up and get thoughts.
[/quote]
As Manufactured - meaning actual measurements taken of a released tire. This prevents a manufacturer from actually releasing a tire at 5-6/32 but having an official report for (7,8,9/32 etc.
01-23-2013, 09:51 AM
#336
Thread Starter
Originally Posted by sirbunz' timestamp='1358958948' post='22286402
street tires keep getting softer
This is the front outside tire from an MX5 that ran the skid pad all day with 40 drivers. It's worn for sure and even has a taper in the center section. The feathering was minimal do to the 20 degree angle of the inside edge of the tread blocks. The amazing thing was how consistent the grip was even after heating up.
01-23-2013, 09:52 AM
#337
Well then this begs the question "who measures the tire tread depth?"
I also add that manufacturer liability prevents it from releasing a tire with substantially less tread than advertised, not solely SCCA rules. The best outcome right now if for BFGoodrich to state on its website that the actual tread depth is 7.1/32" since it is unlikely that the 0.1 can realistically be measured but it would make the tire legal whereas it currently is not until an official measurement is taken.
I also add that manufacturer liability prevents it from releasing a tire with substantially less tread than advertised, not solely SCCA rules. The best outcome right now if for BFGoodrich to state on its website that the actual tread depth is 7.1/32" since it is unlikely that the 0.1 can realistically be measured but it would make the tire legal whereas it currently is not until an official measurement is taken.
01-23-2013, 09:55 AM
#338
I ordered a set of Z2s (in my garage) and Rivals (April delivery). Been debating RTR (CR) vs STR (CR) vs RTA (WRX) this year. What I do know is that I'm sick of the wear, inconsistency and flipping of A6s for autocross. I need the hassle / fun ratio to improve and street driving to events will help that.
Our local region has a lot of cold and gritty events. Will be interesting to see how both tires do in those conditions. I'm guessing that the Z2 will still be the cool / damp tire to have, but the Rival might be a good LAP tire in the Summer.
Will be interesting to see how real world and different condition testing shake out.
The Rival looks like it's the track street tire to have. Autocross, not so sure yet.
The RS3 was found to be the fastest tire on track too, but only after enough heat. The lack of heat and sidewall softness made it a lot less popular last year in STR compared to two years ago.
I'll probably start the season on the Z2s and try the Rivals when it gets hot out.
Our local region has a lot of cold and gritty events. Will be interesting to see how both tires do in those conditions. I'm guessing that the Z2 will still be the cool / damp tire to have, but the Rival might be a good LAP tire in the Summer.
Will be interesting to see how real world and different condition testing shake out.
The Rival looks like it's the track street tire to have. Autocross, not so sure yet.
The RS3 was found to be the fastest tire on track too, but only after enough heat. The lack of heat and sidewall softness made it a lot less popular last year in STR compared to two years ago.
I'll probably start the season on the Z2s and try the Rivals when it gets hot out.
01-23-2013, 10:06 AM
#339
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Well then this begs the question "who measures the tire tread depth?"
I also add that manufacturer liability prevents it from releasing a tire with substantially less tread than advertised, not solely SCCA rules. The best outcome right now if for BFGoodrich to state on its website that the actual tread depth is 7.1/32" since it is unlikely that the 0.1 can realistically be measured but it would make the tire legal whereas it currently is not until an official measurement is taken.
I also add that manufacturer liability prevents it from releasing a tire with substantially less tread than advertised, not solely SCCA rules. The best outcome right now if for BFGoodrich to state on its website that the actual tread depth is 7.1/32" since it is unlikely that the 0.1 can realistically be measured but it would make the tire legal whereas it currently is not until an official measurement is taken.