The Tire DB - Posts about Track and AutoX tire brands
10-11-2008, 01:15 PM
#484
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Those tires are not really made for anything over 2.5K lb car. Even with a hard compound they would be alot like NT-01's but NT-01's should hold up to the heat better. RA888 would be an even better choice.
10-11-2008, 03:43 PM
#486
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Nope its mostly about heat. These will take the weight of the car but they will start to blister and get greasy faster. The weight transfers more heat into the tire faster in other words.
10-13-2008, 08:00 AM
#487
Those tires are not really made for anything over 2.5K lb car.
10-18-2008, 01:49 PM
#490
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i currently run a square steup also... My experiences are that the car feels like its about to slip out from under me at any time going into a turn hard, i guess u can say it was very twitchy. From what i have added I would have to say the biggest improvement on that that i have made was a 15mm spacer in the back. It helped the car stay much more planted and predictable in just about every circumstance.
hope that kind of helps u out
hope that kind of helps u out
10-22-2008, 09:54 AM
#491
Great! Remember, bigger tires require more of the car, weigh more and bind the car up faster. Don't get me wrong, they have their place. I used to run 265 in front and 295 in the rear. At a track like willowsprings, it was great due to the high speeds and corner grip needed. However, at buttonwillow and the streets of willow, they slowed me down due to the lower speed corners and technical turning done there. When I went down to a 245/265 set up, my times were jsut under 1.63 sec faster because the car was lighter and did not bind up as fast. My turn in was easier and faster. I know it sounds like a small amount, but some people spend thousands of $ and months trying to make up that kind of time. Another point to make is count the corners on the track you will be at. Loose 1/10th of a second at each corner on each lap and tell me how much faster you would be if you didn't. Now do the same thing but remove 1/10th. It should all make a litte more sense now. Small advantages add up corner after corner.
Good Luck!
Good Luck!
10-22-2008, 10:04 AM
#492
Item #....Tire Size...Tread Patt..Width...Dia....Circ...rec'd Rim...Measured Rim..Section Width..
46733....295/35ZR17.....M........10.8"...25.3"...79.5"..9.5-11".......10.0"................11.6"
They measured their own 295-sized tire on a 10" wheel. Why would they do that if they didn't think this was an ideal combo?
10-22-2008, 10:26 AM
#495
They measured their own 295-sized tire on a 10" wheel. Why would they do that if they didn't think this was an ideal combo?
If you call Hoosier motorsports and talk with Jeff Speer or talk with one of their techs at the race track, they will tell you that the idea rim width for their radial DOT-R line of tires is +/- .5" of the actual tread width. And you need to measure the actual tread width because the numbers Hoosier publishes are understated.
EDIT: based on the published tread width (10.8") that 295 tire would work best on a 10.5 to 11" rim but since Hoosier understates things bit, I would lean towards an 11.5" wide rim. That's not to say it won't work very well on a 10" wide rim, but we're talking "ideal" here.
Last edited by betamotorsports; 10-22-2008 at 10:35 AM.
10-22-2008, 11:32 AM
#496
Street tires >140 and car must have current registration, but registered owner does not have to drive it.
Modified tires >50
I do, however, think this is comical:
Protest Procedure: Any competitor has the right to Protest another competitor on the grounds that their vehicle does not meet the rules for the Class/Division the vehicle is competing in. The Protest must be issued by another registered competitor, not a Team Owner, crew member, family member, etc. An Official Protest Form must be filled out and submitted to Redline Time Attack Event Management Staff with the appropriate Protest Fee (Street Class: $100, Modified Class: $150, Unlimited Class: $200) in cash. Upon receiving the completed Protest Form and the appropriate Cash Fee, Redline will conduct a Protest Inspection of the vehicle to determine if the vehicle meets the rules for its respective Class/Division. If the vehicle in question is found to meet the rules, the Protest Fee will be awarded to the owner of the vehicle in question. If the vehicle in question DOES NOT meet the rules, the vehicle’s lap times will be considered invalid and the vehicle’s results will be removed from the official competition records. Decisions made by Redline Staff are final, there will be no appeals.
So you beat me in xxx class but are illegal. I pay $xxx and you are proven illegal. Now I take x place and get X$ award, but I just paid $xxx to rat you out. It's not like the purses are multi thousands of dollars. . .
10-22-2008, 12:42 PM
#499
Because the DOT has a regulation regarding published wheel and tire sizing. If Hoosier, Kumho, Goodyear, or anyone else publishes a recommended wheel size for a specific DOT approved tire size they have to, by federal regulation, publish a rage of wheel sizes and use a specific rim width within that range, as specified by the regulation.
If you call Hoosier motorsports and talk with Jeff Speer or talk with one of their techs at the race track, they will tell you that the idea rim width for their radial DOT-R line of tires is +/- .5" of the actual tread width. And you need to measure the actual tread width because the numbers Hoosier publishes are understated.
EDIT: based on the published tread width (10.8") that 295 tire would work best on a 10.5 to 11" rim but since Hoosier understates things bit, I would lean towards an 11.5" wide rim. That's not to say it won't work very well on a 10" wide rim, but we're talking "ideal" here.
If you call Hoosier motorsports and talk with Jeff Speer or talk with one of their techs at the race track, they will tell you that the idea rim width for their radial DOT-R line of tires is +/- .5" of the actual tread width. And you need to measure the actual tread width because the numbers Hoosier publishes are understated.
EDIT: based on the published tread width (10.8") that 295 tire would work best on a 10.5 to 11" rim but since Hoosier understates things bit, I would lean towards an 11.5" wide rim. That's not to say it won't work very well on a 10" wide rim, but we're talking "ideal" here.
that the tire should go on a wheel sized 9.5-11", yet you are saying that they (behind closed doors) would suggest that tire go on an 11.5" wheel?
I'm guess I'm trying to pro/con having 275 vs 295-sized Hoosiers on a 9.5 or 10" wheel.
10-22-2008, 12:55 PM
#500
yet you are saying that they (behind closed doors) would suggest that tire go on an 11.5" wheel?
Hoosier says the tire will work best on a rim that's +/- .5" as wide and the tread width. The published tread width for the 295 is 10.8" so that ideal rim size is 10.8" +/- .5" (10.3" to 11.2") A 10.5" and 11" wide rims fit right in the middle of that using the published numbers.
I say (based on my experience with Hoosier A and R2s, 3s, 4s, 5s, and 6s) is that their actual tread width (as measured across the tire, tip to tip on the wear triangles) is most likely wider then their published number. I would lean towards an 11 and probably even an 11.5" wide wheel.
FYI... The 285s work best, in my experience, on a 10.5" wide wheel.
FYI2... The 295s will work well on a 10" wide wheel but I can't tell you if a 275 will work just as well on the same size wheel. You'll have to test to make that determination.
FYI3... Wider is not always better. Jason Isley dominated BS for years going against the Solo stock class conventional wisdom (285s on 8 to 8.5" wide wheels) by sticking with 245s on his 8" wheels.
Last edited by betamotorsports; 10-22-2008 at 12:58 PM.