RobWilson

I'm ready to pull the trigger on new tires for my stock rims on my '08. I had made up mind on the tires and then realized that my rear rims are 10" wide. I was thinking they were 10.5" wide. I'm now waffling back and forth between Michelin Pilot Super Sports and Bridgestone RE-11. Both tire manufacturers recommend a 10.5" minimum rim width for the 305/30/19 tires.

Has anyone running 305/30/19 tires on the stock 19" X 10" rims had any issues?

St.Char

You will be fine with this set-up as long as you are not tracking/autocrossing your car. Many have run this set-up

SloChicken

you are fine. I am running this size on 10" rims.
I would suggest you at least entertain getting the Hankook Ventus V12. It is a great tire and will save you some 800 bucks or so over the Michelin. Look at a few reviews and see for yourself.
Tire Rack is a good option - and if you want to, you can take tire rack's price and get a price match at your local discount tire.

Good luck!

GOTPSI

I just posted about this didn't relize you posted this. This helps me. I just bought 305-30-19 hankooks and want to put them on my 10 inch wheels. Good to know they will work. Thanks

lowriderflow

yep, no problems with 305s on stock width rear

RobWilson

Can you explain what you mean? What problems would be caused using these tires tracking/autocrossing? Is this from personal experience?

If the tire fits the rim, but doesn't perform properly, I'll go with the Bridgestone RE11 in stock sizes.

Thanks!

v26278

Correct rim size is necessary fro the sidewall to flex in the way that it was designed.

If the rim is wider or narrower than the recommended range, the tire sidewall will flex at a point that is either too close to the rim or too close to the tread and in either case at a point not designed for flex. Under hard use, such as autocross, the tire will not perform as it was designed and your elapsed times will suck, and the tire could even fail

MikeinAZ

Did the 305's fill out the wheel well nicely? I am about ready to get a new set and am hoping they sit about flush with the fenders.

St.Char

RobWilson

Thanks for the feedback. I'm going to stick with the manufacturer's recommendation for rim width and go with the stock tire sizes in the Bridgestone RE-11s. Just ordered them from Tire Rack.

Grabbed_Crow_Mobe

There was another post today about the same subject: "305 35 19 on stock c6"

St.Char/v26278 - Sounds like this isn’t the way to go if you're tracking? Any recommended tire setup for stock wheel sizes?

My post from the other thread about my situation:

Seems like everyone is in agreement that the 305/30/19 tire isn’t an issue for the rear even though it’s over the manufactures recommendation minimum wheel width (stock =10”, min recommended=10.5”). I’m curious to know if there are adverse side effects of putting a tire that’s too big for the wheel? I’m looking at getting a set of dedicated track wheels/tires. Wouldn’t handling be affected by having a tire too wide for the wheel? I would understand that for street driving or maybe even drag (I have no experience there) that it wouldn’t make a big difference. Curious to know if anyone is doing aggressive track events with this setup where handling is crucial (I’ve always run stock sizes)?

I’m looking at the Toyo R888 and DarkSide’s recommended setup of 265/35/18 (25.4” dia) and 305/30/19 (26.5” dia) are both ½” larger than the stock wheel requirements but perfectly fit the recommended stagger of 1.1”

The largest tire size you can go and stay within wheel specs is 255/35/18 (25.1” dia) and 295/30/19 (26” dia) but the stagger is dropped to 0.9”. According to Taken19, that will cause problems.

To be honest, I wouldn’t mind staying with stock sizes to avoid issues but the Nittos and R888s don’t come in stock sizes. Perhaps I should just stay with stock sizes and get RE-11s?

I have seen many posts where members get widened front wheels and widened rear 18” wheels for track setups. I have to admit, I’m skeptical about widening wheels but it seems like everyone does it with no problems. I have also read that the CCWs are the best bet but am hoping to not spend that much on a set of track wheels and am curious if there are any good setups for stock wheels.

Any insight would be very appreciated!

Corby

I am getting new tires in the spring as well. I'd like to go with the 305 35 19 on the back. If I do this, what tire size is recommended for the front? 245, 255 or 265?

Streetk14

If you go with a 265/35/18 in front, you keep the front/rear tire height ratio very close to factory spec. Those and the 305/30/19 are shorter than the stock Goodyears, but they are shorter in the same amount.

I run 265/35/18 and 305/30/19 RE-11s on my car, FWIW. Ideally, a wider rim is better. I was going to widen all of mine 1", but decided not too since I'm thinking of doing GS fenders in the future. Handling is great with them, but I'm not autocrossing.

Edit: just saw you are looking at a 305/35/19? Didn't think there were many choices in that size?

Corby

My bad, should have said 305 30 19 on the back. Good info, thanks

TommyV

I'm running 255/35/18 and 305/30/19's Nitto Invos. They will not sit flush with the fender unless you use spacers. I'm using Pfadt 1/4 " spacers with ET lug nuts and they sit flush. My car is also lowered and I have no problems.

JoesC5

Why would you need to run spacers when putting wider tires on the stock wheels? Replacing the 285 tires with 305 tires will mean that the tire is .4" closer to the edge of the fender then with a stock setup. In effect you just installed a .4" spacer to a stock 285 tire/wheel. A 1/4" spacer would move the tire out even further, increasing the possibility of tire rub.

TommyV

Because I wanted them flush with the fenders. The Vette is one of the few sports cars where the tires don't sit flush. No rubbing BTW.

This is with my old BFG KDW's, 255/295's. The 305 Invos are a tad wider.

mazurekd

265/35/18 is .41" smaller in diameter than stock

305/30/19 is .65" smaller in diameter than stock

Significant difference, maybe not. The same change - no.

Corby

Any problems with the speedo being accurate with the tire diameter diff?