SirLaughsALot Posted October 15, 2008 Share Posted October 15, 2008 Hi, sorry this is only my first post, ive been ghosting on here for a while and just reading up as much as possible on practically every aspect of the 240z. Anyways, I am planning on using 315/35-17 Toyo R888's which recommend a rim size of 10.5-12.5inches wide. I was wondering if there was a disadvantage to run the low side of this (10.5") wide rim. I am still looking for a rim for the rears, and think I have my mind set on the SSR Type C's in 17x10.5, and of course matching fronts in 17x9 (255/40-17). Any feedback on this would be appreciated. I am not a tire expert by any means, but I believe it will give the tire a the opposite of a "stretched" appearance, whatever that would be. Thanks, -Ryan Quote Link to comment Share on other sites More sharing options...
evildky Posted October 15, 2008 Share Posted October 15, 2008 I used to run 225 50 15's and decided I simply could not get the power to the ground or carry the speed in the turns, I went a bit extreme, and upped to 295's up front and 315's in the rear, not I have more tire than cna use due to lack fo weight, my car weighs only 2105 lbs, and the throttle requires a delicate touch to keep they dorm spinning, loking back I think 265's on a 10" wheel would have yielded about as much result with less clearance issues and less weight, each of my CCW's with tire weighs about 50 lbs, not heavy enough to be an issue at my hp to weight ratio but might be a bit much Quote Link to comment Share on other sites More sharing options...
JMortensen Posted October 15, 2008 Share Posted October 15, 2008 From http://www.hoosiertire.com/faqrr.htm: 4. What rim width should I use for my application? The answer depends on which type of tire you are using. For our radial tires a good rule of thumb is to take the tread width dimension (+-) 1/2 inch. This will put you in the optimum range for the tire. The tire will mount on a wheel outside of this range, however performance and wear may be negatively affected. If you find that your vehicle, or the rules, will not allow a wide enough wheel for the tire you think you would like, consider using a narrower tire. In most cases a properly sized wheel/tire combination will outperform a wider tire on a wheel that is too narrow. If you are looking at our DOT bias racing tires the tolerance is a bit broader. For our DOT bias line we publish a "measured rim" or "design rim" dimension. This dimension simply indicates the width of the wheel the tire was mounted on when the other listed dimensions are recorded. Bias ply tires are more tolerant of a range of wheel sizes. Typically, the listed rim dimension is a good starting point. The wider tires can range (+-) an inch without noticeable change in performance. A narrow (less than 6" wide) tire will tolerate (+-) 1/2 inch. This would also apply to the Historic product line in our tire specs. In the Road Racing section of our product line the racing slicks are typically designed for specific applications where the wheel width is controlled. The tire is designed to perform at its best on the wheel listed in the "design rim" or "recommended rim" column. Once again, there is a tolerance for this dimension. The tire will mount on a different sized rim but, may exhibit unusual wear or stability outside of the recommended rim. This is particularly important on "cantilevered" tires. This is a specific type of construction used in racing classes which have very narrow wheel restrictions. The design of the tire allows the usable tread to far exceed the width of the wheel. These tires should ONLY be mounted on the rim sizes indicated in the specs. Quote Link to comment Share on other sites More sharing options...
johnc Posted October 15, 2008 Share Posted October 15, 2008 A 275 width tire should be more then enough for your car and it will fit very nicely on a 10.5" wide wheel. Quote Link to comment Share on other sites More sharing options...
JustinOlson Posted October 15, 2008 Share Posted October 15, 2008 On this topic, I have a set of 17X9.5" rota's from the group buy. For street tires, would my car handle better with a 255/40 or 275/40 (tread width is 9.1" and 9.8" respectively)? Justin Quote Link to comment Share on other sites More sharing options...
johnc Posted October 15, 2008 Share Posted October 15, 2008 Tire design and tread compound have more to do with ultimate grip then width. A 255 width DOT-R tire will be considerably faster around a race track then a 275 width 150 treadwear street tire. Quote Link to comment Share on other sites More sharing options...
JustinOlson Posted October 15, 2008 Share Posted October 15, 2008 Street tire for street tire. I'm looking at the HTR Z III. Just trying to pick the proper tire size for my wheels. http://www.tirerack.com/tires/Spec.jsp?make=Sumitomo&model=HTR+Z+III&partnum=74YR7HTRZ3&vehicleSearch=false&fromCompare1=yes&place=4 Justin Quote Link to comment Share on other sites More sharing options...
EMWHYR0HEN Posted October 15, 2008 Share Posted October 15, 2008 What really matters is the compound. Just check out reviews for different street tires. I would definately prefer some narrow sticky tires over some wider so-so ones. 255,265,275 I dont think it matters so much on a street tire... Quote Link to comment Share on other sites More sharing options...
SirLaughsALot Posted October 17, 2008 Author Share Posted October 17, 2008 Thanks for one answer, lol. Anyways, I think I will be fine running a 10.5" rim in the rear with a 315. It is only .5" off of the recommended and should not have too much of a problem. I could always upsize the rim or downsize the tire if there was a problem. For the front, I will run a 9-9.5" rim, no big deal. -Ryan Quote Link to comment Share on other sites More sharing options...
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