Lateral-g Forums - ? Difference in 255's to a 275's up front ?

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- - ? Difference in 255's to a 275's up front ? (https://www.lateral-g.net/forums/showthread.php?t=45817)

Quote:

Originally Posted by 6carmello8 (Post 545827)

Makes sense and more balanced feel I assume. Thanks!

I'm thinking more on the 9.5 wheel for the street with the 275's. What do you think? It'll be negligible but less wheel = less unsprung weight, and the tire will have less "stretch" if any and more "squish" on the tire. What backspace would be ideal? Ridetech recommends 18x10 with 5.75" offset so with a 18x9.5 a 5.5"?

The wheel weight difference between a 9.5" and a 10.0" wide wheel is minimal. The Rival, Michelin Pilot Sport, Toyo R888 and Bridgestone's run wide and fit best on a 10.0" wide wheel. Check out the tire specifications chart and match the tread width to the wheel width for optimum tire performance.

Stielow's last two Camaro's ran a 10.0X18 front with a 275/35-18 tire and both cars won Optima.

I'm not savvy on Ride Tech's recommend wheel fitments. I've contact them several times and asked, but they stated they do not want to be responsible for wheel/tire fitments that may or may not fit.

Anyone familiar with the RideTech's suspension set up's and wheel/tire fitments?

Quote:

Originally Posted by Track Junky (Post 546054)

Tough one to answer in my opinion. 275 is only a 1/2" wider. Other factors that contribute to performance are tire weight and load capacity.
I ran 255's on the road course for quite awhile before going to 275's and at this time I honestly couldn't tell you if I felt a difference.

Note: that was with 275's out back.

Hummn that's interesting. I think though with a 325 out back, the 275 with balance it out more...less understeer. What engine did you have up front?

Quote:

Originally Posted by Formula43 Wheel (Post 546059)

Thanks for the info on the tire width sizes, this will help to chose what tires to run and if I do end up going with a 9.5 or 10 up front.

When you say they run wide, is this simply from a fitment perspective? I noticed that Pzero's have a square sidewall but say the BFG's G force have a flaring area by the rim that make them seem wider but the contact points on all the tires may be the same or do they in fact have wider contact points?

Quote:

Originally Posted by 6carmello8 (Post 546192)

Hummn that's interesting. I think though with a 325 out back, the 275 with balance it out more...less understeer. What engine did you have up front?

At the time I was running an iron block 383. Currently running an aluminum small block 427 now with 275's up front and 315's in the rear.

True statement but performance wise you'll have to spend some time making the 325's work with the 275's up front. Not optimal but not a big deal around here either. That's part of the fun......learning suspension geometry.

Quote:

Originally Posted by Track Junky (Post 546228)

Did you notice a difference with the aluminum block vs. aluminum as far as overall handling? 275/325 is what the Z06's are running...I don't see why it would be a problem especially on the street.

Im not really qualified enough to give you an educated answer but my guess would be the rear tires need to be wider on the Vettes because of the higher tread rating and the amount of power they are putting to the rear wheels.

Weight loss makes a huge improvement.