? Difference in 255's to a 275's up front ?

[6carmello8]

Anyone have first hand experience with this upgrade?

I'll mostly be on the street but the car will be driving very spiritedly :RunninDog:

I just learned that with the Ridetech Tru Turns, you can run 275's on a stock subframe! Game changer for those that don't think it's necessary to go with an aftermarket subframe.

Right now, the front is set up with GW arms, and Qa-1's and Hotchkis swaybars. I have a Lq9 /LSX.

Thanks and really any input will help so I can get an idea.

[Musclerodz]

20mm or almost 1". But overall width will vary between mfg's

[6carmello8]

20mm or almost 1". But overall width will vary between mfg's

I was asking more about the difference in the sense of handling, feel and performance rather than a literal difference hence the reason I listed suspension and engine (lq9 iron block weight about 88 lbs more than aluminum etc.)

[Musclerodz]

Wider is always better. If your running 335 out back it will have less of a push (under steer) in the corners.

[Formula43 Wheel]

A 275 on a 9.5-10.0" wide wheel is a good fit. More front end grip and more fun! It should still drive nice down the freeway without much tramlining in the ruts.

:flag2:

[6carmello8]

Wider is always better. If your running 335 out back it will have less of a push (under steer) in the corners.

Makes sense and more balanced feel I assume. Thanks!

A 275 on a 9.5-10.0" wide wheel is a good fit. More front end grip and more fun! It should still drive nice down the freeway without much tramlining in the ruts.

:flag2:

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"?

[Track Junky]

275's on 9.5's works well.

[Vince@Meanstreets]

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"?

Its a 68? I'd stay with the 9.5's with 5.750in BS. You can do 10's with a 6" BS but you have to do some work.

[6carmello8]

Its a 68? I'd stay with the 9.5's with 5.750in BS. You can do 10's with a 6" BS but you have to do some work.

Yes it's a 68 and Ridetech also recommends a 5.75 BS with a 10 so same bs with a 9.5 will give me a bit more room lock to lock on the subframe. Thanks for the info.

Anyone with experiences going from a 255 up front to a 275 as far as performance?

[Track Junky]

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.

[Formula43 Wheel]

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?

[6carmello8]

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?

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?

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?

[Track Junky]

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.

[6carmello8]

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.

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.

[Track Junky]

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.