Smoker Joker

I have a 2017 Stingray z51. I recently put Michelin Cup 2 305s on the rear. Traction is great. 0 to 60 times improved. Unfortunately when I hit uneven road surfaces the edge of the tires rub the wheel well. I would like to know if there is a way to fix this problem without goong to a smaller tire size. Any suggestions I would appreciate it.

BrunoTheMellow

you can raise the rear of the vehicle up on the bolts (search "lowering bolts" for how to). That is what I had to do when i ran 285/35R20 on my mine. Had to raise 1/2 way to stop rubbing on bumps and raise all the way to stop rubbing on high G corners at the track.

Mr. Jones

is the rub with the stock wheel?

I had the slightest rub on a different car some years ago.
I pulled the tires and had 3/16" cut off the back of the hub section by a machine shop.
It has been years with these wheels with no problems.

Avanti

Raise the rear or the wheel-well cut-outs. Not much else left, apart from a solid rear end (no suspension travel).

Smoker Joker

Thanks guys I appreciate the feedback. I dropped tire sizes. Went from 305s to 295s. Problem fixed.

lakemg

^^^Are you getting the same performance out of the 295s????

~Stingray

Curious to know why you choose that route with all the other options presented cost no money.

Smoker Joker

I have not completely broke in the new tires. However I've hit a few 3 8 0 to 60 and my best with the 305s was 3.7. Handeling around turns feels the same.

Smoker Joker

The reason I chose that option was that I did not want to lift the rear. I was not sure how it would look and was afraid it would change the way it handled. I took it to the Dealership that I bought the car from. I bought a suspension upgrade that is GM approved. It was a 3hr download. I was skeptical but it did change the way the vehicle handled. Less bounce and les rocking on hard turns. That almost fixed my problem. There were 4 spots on my commute where I bottomed out. After the upgrade I only bottomed out on one of the spots. As far as cost. American Tires swapped the 305s for the 295s at no cost. I put 11 hundred miles on the 305s.

Mobil 1

How far did the 305s stick out? Acceleration traction is why I'm switching over to a GS in February.

Smoker Joker

They did not stick out from the car. I mounted them on stock rims so the tire looked a little ballooned.

Smoker Joker

This is the 305s on stock rim.

X25

Stiffer sway bars can also fix such rubbing issues, that only happen at uneven surfaces, it at the track.

Patches

I'm running Pirelli Rosso 375's (don't measure as a true 375) on the back of my '14 Z51. I get slight rubbing at full travel with the rear lowered about half way. I have a set of Pirelli 325's which measure at about 13" width ready to go on when the Rosso's wear out and I should be able to lower it all the way back down. Pirelli does not make the 375 anymore. These tires came with the HRE's I bought which were originally built for a Stingray Z51 almost identical to mine. I'm running 285's up front - Wheels are 20"/21" F/R.

BrunoTheMellow

Can I see the front? I'm trying to put 285s on mine without spats.

Patches

BrunoTheMellow

thanks! 9.5 inch wheels? Those look like perfect fitment that wouldn't rub with some camber.

Patches

Front 20x9.5
Rears 21x12