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Discussion in 'Suspension, Steering, Brake & Wheel Topics' started by JD Z, Nov 9, 2017.
Minitub it and put some nice 315 35 17s out back
I actually run 275/60/15 in the rear and my ride is lowered, no problems there. Then 225/60/15 on the front. ALL 4 on the 15x7 Stock Z28 rallies...
Ditch the stock wheels for some wider ones for sure. 8 inch on the front nine and a half on the back. There are a lot of economical choices out there to fit the budget. 7 inch rims on the back of a hot rod? Not me.
Honestly the 225/60 255/60 Look Awesome!
Nice Rake, fits the car really good.
Here is my car with 245/60 all around this is how i bought it.
I have run P235 6015 s on the front and P245 60 -15 on the 15 x 7 factory Turbine rims. when my car was fairly stock And they fit fine. I run 17`s now It all depends on the "look" of the car ,And your pocket book/Good luck to you,
OK folks - there are a few reasons not to run a 275 on a 7" wheel
#1 - tire manufacturers don't recommend it. I'm not talking about truck tires; they are completely different construction). Tire manufacturers spend a lot of money to hire engineers that spend a lot of time figuring out what wheel size works well. You really think you're going to outsmart them by looking at the latest tire ads?
#2 - Wider tires, by themselves, do not mean more traction. Prove me wrong without quoting an ad campaign. The actual contact patch of a tire is small, maybe the size of a playing card. That patch only increases by a small percentage of the overall width and diameter.
#3 - Wider tires are heavier. That's right, tires are unsprung reciprocating weight. The more they weigh, the more force to takes to accelerate and decelerate them.
#4 - When a tire is too wide for a wheel, the sidewall isn't properly supported. This means flex, uncontrolled, unpredictable flex.
This photo is a great example
Look at how far beyond the tread extends past the bead. That section of tread is basically unsupported.
100% in corners a car on a 15x7 with a 275/60/15 is going to be less stable, less predictable and slower than a car on a equal 235/60/15. In a straight line, it's a little less pronounced, but the properly sized tire will be faster
^ +1 Sidewall roll while cornering gets pretty bad if the bead of the tires needs to be pushed inward to get them to fit.
I used 255/60/15 on my 7" wheels. I wouldn't go any wider on a 7" wheel.
They seem to work fine but the previous 235/60/15 tires actually felt a bit more stable in the corners.
BTW... Tire pressure is critical for running 255s on a 7" wheel.
28 lbs is about the limit. I ran mine @ 32 lbs for several thousand miles and the center of the tread wore much more than the outer edges.
Thanks guys. Great points lowend and twisted.
I’m leaning to:
215/70 on front
255/60 on rear.
Would like wider on rear but I want to keep the stock wheels. Thanks for your time to write and help.
Please don't think I was trying to be condescending to you JD Z
I was addressing my post to anyone who might be viewing the thread
Its your car you do what you want.