Tire Load Ratings and Max Rim Width?
09-18-2010, 01:31 AM
#16
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09-18-2010, 01:33 AM
#17
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sunday is right.
1. each tire brand is different a 315 hoosier R6 is really a 305 for example.
2. 1/2" rim difference is not going to be a prob. your tire will not fail. but do use a pyrometer to see if you are getting max benefit.
3. i have ran 315 R6 and 315/305toyos on 11" and 12" CCW's.
1. each tire brand is different a 315 hoosier R6 is really a 305 for example.
2. 1/2" rim difference is not going to be a prob. your tire will not fail. but do use a pyrometer to see if you are getting max benefit.
3. i have ran 315 R6 and 315/305toyos on 11" and 12" CCW's.
09-18-2010, 01:55 PM
#18
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09-18-2010, 01:55 PM
#19
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Cant help, but following along with interest. What is your goal here? Do you need the extra width to alleviate a problem? The 245/305 combo is mainly considered "what to run" on 997.2s up here. Have not seen the larger tires in the field and, more importantly, have not heard a reason why they would be necessary. What do you know? Have experienced? This info might also draw out additional responses. SundayDriver is on it - will it give you an 'effective' (read: greater speed and/or handling) increase in contact patch? I think that the main question here (but you might be after, remedying, something totally different and particular to your car and track)... Interested & thx for the posts.
1- smaller diameter will basically lower the car 1/2"
1- smaller diamter will gear down the car for better accelleration
I believe this but wonder buy how much and if it really matters and even though the 255/315 tires are a little bit wider, will that really matter anyway?
09-18-2010, 01:57 PM
#20
Race Director
Thread Starter
Mike,
Something is being lost in the translation you stated ""The 315-35-18 sized tire Toyo says max rim width is 11.5" and load rated to 98Y 1653lbs""
http://www.tiresdirect.net/TOYO_Prox..._P1527C200.cfm
Minimum rim width is 11.5" for the 335/30 18
Peter
Something is being lost in the translation you stated ""The 315-35-18 sized tire Toyo says max rim width is 11.5" and load rated to 98Y 1653lbs""
http://www.tiresdirect.net/TOYO_Prox..._P1527C200.cfm
Minimum rim width is 11.5" for the 335/30 18
Peter
09-18-2010, 03:24 PM
#21
Rennlist Member
http://www.tiresdirect.net/TOYO_Prox..._P2270C200.cfm
305/35 18 RA1 rim size 10/11/12 " rim all work.
315/30 18 Hoosier R6 11/12" rim
315/35 18 Kumho V710 10.5 to 12.5" rim
Peter
09-18-2010, 04:51 PM
#22
Race Director
Thread Starter
85gold, I'd love to run Hoosiers or so sorry of slick but I drive my car to and from the track hence my use of RA1 and or R888 tires.
What size would you pick for my car?
What size would you pick for my car?
09-18-2010, 05:31 PM
#23
Rennlist Member
IIRC?? You need a taller rear tire on the 997.2 so I would run 305/35 18 and 245/40 18 RA1's. This what you are running now and I see no reason to change.
Peter
Peter
Last edited by 85Gold; 09-18-2010 at 05:34 PM. Reason: This
09-18-2010, 10:24 PM
#24
Race Director
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Thanks for the advice 85gold... Much appreciated
09-19-2010, 12:09 PM
#25
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I don't know about the US, but in most countries, insurance companies and the cops check on whether the load ratings meet the manufacturer's specifications, if they don't then you can find yourself without an insurance claim and an expensive citation, or worse.... so if driving to the track on the same tyres, think about the load rating issue....
Also, for DE, the less grip the tyres have, the more fun you have
R+C
Also, for DE, the less grip the tyres have, the more fun you have
R+C
