Jan in Omaha Posted July 10, 2007 Share Posted July 10, 2007 Where is the cut off between an "R" tire with point value of +5 (treadware of 100+) and a "street tire" that will not receive a points assessment? 140 treadware? 160? 180? Quote Link to comment Share on other sites More sharing options...
National Staff Greg G. Posted July 10, 2007 National Staff Share Posted July 10, 2007 Where is the cut off between an "R" tire with point value of +5 (treadware of 100+) and a "street tire" that will not receive a points assessment? 140 treadware? 160? 180? Good question, Jan. In general, anything over 200 would be a street tire. If you have a particular tire in mind that is less than 200, I can take a look at it and give you a ruling. Quote Link to comment Share on other sites More sharing options...
Jan in Omaha Posted July 10, 2007 Author Share Posted July 10, 2007 Where is the cut off between an "R" tire with point value of +5 (treadware of 100+) and a "street tire" that will not receive a points assessment? 140 treadware? 160? 180? Good question, Jan. In general, anything over 200 would be a street tire. If you have a particular tire in mind that is less than 200, I can take a look at it and give you a ruling. You should know that I tend to find these type of questions by now. Did you mean 200 and over would be generally considered a street tire OR treadware 201+? (all those guys with Falkens/HankookZ212/and BFGKD's would like to know) Here's a number of interesting tires with treadware ratings between 100 and 200 Yokohama A022 = 120 Bridgestone Potenza RE050A Pole Position = 140 Bridgestone Potenza RE050A = 140 Bridgestone Potenza S-02 A = 140 Bridgestone Potenza S-02 = 140 Yokohama ADVAN Neova AD07 = 140 Michelin Pilot SX MXX3 = 140 Pirelli PZero System = 140 Avon Turbospeed CR228-D = 160 Yokohama A008/A008P = 160 (they still make these?) Yokohama ADVAN A043/A046/A10B/AVS S1 = 160 Sumitomo HTR Z = 160 Bridgestone Potenza RE-01R = 180 Yokohama AVS Sport = 180 Yokohama ADVAN Sport = 180 Pirelli eufori@ = 180 Falken AZENIS RT-615 = 200 Falken RT-215 = 200 Hankook Ventus Z212 = 200 BFGoodrich g-Force T/A KD = 200 Quote Link to comment Share on other sites More sharing options...
ianacole Posted July 10, 2007 Share Posted July 10, 2007 I believe the Nitto NT-01 are rated at 100 as well. Quote Link to comment Share on other sites More sharing options...
Jan in Omaha Posted July 10, 2007 Author Share Posted July 10, 2007 I believe the Michelin Pilot Sport Cups and the Nitto NT-01 are both rated at 100 as well. The Sport Cup is 80 so it would be a +7 tire. The Nitto is 100 so it's a +5 tire. I was looking for tires that were not catagorized as competition/track tires by the Tirerack but may still be considered as such by the TT regs. I'm trying to discover where the treadware upper limit is for +5 competition tires. Right now there is no definition in the rules. Quote Link to comment Share on other sites More sharing options...
ianacole Posted July 10, 2007 Share Posted July 10, 2007 The Sport Cup is 80 so it would be a +7 tire. Yah, I went and check and corrected my error on the Michelins (you beat me to it though ). Quote Link to comment Share on other sites More sharing options...
RodeoFlyer Posted July 11, 2007 Share Posted July 11, 2007 funny I was wondering the same thing the other day. Khumo MX - 180 treadwear rating? Quote Link to comment Share on other sites More sharing options...
Jan in Omaha Posted July 11, 2007 Author Share Posted July 11, 2007 funny I was wondering the same thing the other day. Khumo MX - 180 treadwear rating? 220 from the list at Tirerack Quote Link to comment Share on other sites More sharing options...
kbrew8991 Posted July 11, 2007 Share Posted July 11, 2007 if you could run it in the street tire classes for SCCA autocrosses, its probably a street tire here as well Quote Link to comment Share on other sites More sharing options...
Jan in Omaha Posted July 11, 2007 Author Share Posted July 11, 2007 if you could run it in the street tire classes for SCCA autocrosses, its probably a street tire here as well SCCA Street Touring Solo classes require treadware 140 as its minimum. That was my thought as well... but I don't make those decisions Quote Link to comment Share on other sites More sharing options...
phoenixR34 Posted July 11, 2007 Share Posted July 11, 2007 140 is the cutoff for SCCA.. in addition, it seems most "sporty" cars these days come with 140TW tires. ex. 350Z stock Bridgestones are 140TW. Quote Link to comment Share on other sites More sharing options...
kbrew8991 Posted July 11, 2007 Share Posted July 11, 2007 if you could run it in the street tire classes for SCCA autocrosses, its probably a street tire here as well SCCA Street Touring Solo classes require treadware 140 as its minimum. That was my thought as well... but I don't make those decisions they also have an exclusion list to catch most of the Yokohama r-comps Quote Link to comment Share on other sites More sharing options...
kbrew8991 Posted July 11, 2007 Share Posted July 11, 2007 140 is the cutoff for SCCA.. in addition, it seems most "sporty" cars these days come with 140TW tires. ex. 350Z stock Bridgestones are 140TW. so if I make a car that come stock with V710s or Hoosiers can well call those street tires? They're DOT legal.... Quote Link to comment Share on other sites More sharing options...
phoenixR34 Posted July 11, 2007 Share Posted July 11, 2007 140 is the cutoff for SCCA.. in addition, it seems most "sporty" cars these days come with 140TW tires. ex. 350Z stock Bridgestones are 140TW. so if I make a car that come stock with V710s or Hoosiers can well call those street tires? They're DOT legal.... It's easier to penalize one or two cars that come with V710s (for example), than about 60 sporty cars that come with 140TW or higher. 140TW doesn't necessarily mean "good tire".. drive a 350Z on RE040s and you'll see what I mean, but that does seem to be the standard these days. I can think of only one car (Elise) that comes with tires below 140TW. The base Elise (C car) already gets 7 points back due to size, so you won't see any sympathy coming from me. Are you honestly going to penalize a 350Z running on stock OE Bridgestones? There needs to be a defined cutoff point for street tires (0 points) vs. race tires (5 points). I was actually wondering about this the other day. Quote Link to comment Share on other sites More sharing options...
smack_evo Posted July 12, 2007 Share Posted July 12, 2007 ^^^ i agree. i believe both evos and stis come with below 200 stock. and those tires are no where close to even an ra-1. Quote Link to comment Share on other sites More sharing options...
phoenixR34 Posted July 13, 2007 Share Posted July 13, 2007 EVO, STi, 350Z, S2000, G35 and probably a ton more have 140TW tires from the factory. The rules currently assess points for "R Compound" tires.. they don't make any mention of "Street Tires". Going by the literature either on Tire Rack or the manufacturer's website, it's pretty easy to define R Compound, or which is or isn't an R tire. Everything else that isn't (not including non DOT approved) would get zero points.. that's how I read it. It would be easier just to add on the back in the free mod section "140TW or higher get zero points" etc. Quote Link to comment Share on other sites More sharing options...
smack_evo Posted July 13, 2007 Share Posted July 13, 2007 i guess those soft street tires make the manufacturer numbers look real good in the magazines why throw any extra money at suspension development or weight distribution when you can just toss a stickier tire on it Quote Link to comment Share on other sites More sharing options...
RACER-X Posted July 18, 2007 Share Posted July 18, 2007 Where is the cut off between an "R" tire with point value of +5 (treadware of 100+) and a "street tire" that will not receive a points assessment? 140 treadware? 160? 180? Good question, Jan. In general, anything over 200 would be a street tire. If you have a particular tire in mind that is less than 200, I can take a look at it and give you a ruling. You should know that I tend to find these type of questions by now. Did you mean 200 and over would be generally considered a street tire OR treadware 201+? (all those guys with Falkens/HankookZ212/and BFGKD's would like to know) Here's a number of interesting tires with treadware ratings between 100 and 200 Yokohama A022 = 120 Bridgestone Potenza RE050A Pole Position = 140 Bridgestone Potenza RE050A = 140 Bridgestone Potenza S-02 A = 140 Bridgestone Potenza S-02 = 140 Yokohama ADVAN Neova AD07 = 140 Michelin Pilot SX MXX3 = 140 Pirelli PZero System = 140 Avon Turbospeed CR228-D = 160 Yokohama A008/A008P = 160 (they still make these?) Yokohama ADVAN A043/A046/A10B/AVS S1 = 160 Sumitomo HTR Z = 160 Bridgestone Potenza RE-01R = 180 Yokohama AVS Sport = 180 Yokohama ADVAN Sport = 180 Pirelli eufori@ = 180 Falken AZENIS RT-615 = 200 Falken RT-215 = 200 Hankook Ventus Z212 = 200 BFGoodrich g-Force T/A KD = 200 Awsome list and a great thread! Quote Link to comment Share on other sites More sharing options...
National Staff Greg G. Posted July 18, 2007 National Staff Share Posted July 18, 2007 As far as I know, none of those tires listed is an "R compound" tire. Quote Link to comment Share on other sites More sharing options...
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