Doubledjunky

I bought my G with the following setup:

LF Cooper RS3-A (245/40R19 94W)
RF Cooper RS3-A (245/40R19 94W)
LR Toyo Proxes 4 Plus (245/40R19 96W)
RR Toyo Proxes 4 Plus (225/45R19 96W)

I am having to replace the LR tire as it is at 3/32 tread.

My question is:
1. Will it be okay to replace it with a Bridgestone Potenza RE050A 245/40R19?
2. Will I be okay with the 245/40 on the front if stock is supposed to be 225/40?
3. Will I be okay with a 225/45 on the rear? Or should I move that to the front and throw the Coopers in the rear?

ryanwhite74115

You will not be ok. Holy crap on Frankenstein. Please...please swap the skinnier tire to the front.

the93owner

Smaller tires need to be in front... also, sizes need to match on each axle. Put 225/45/19 in front and 245/40/19 in the rear.

blnewt

iTrader: (13)

Also don't mix All Seasons w/ Summers, looks like you're almost to the "what not to do" trifecta.

But welcome to the site, we'll get you straightened out.

Doubledjunky

Thanks, guys. You all pretty much confirmed what I've been thinking.

So move the Coopers to the rear. And replace the Toyo 245/40 with a 225/45.

And make sure the replacement tire is all-season like the rest.

On a side note, I'm doing this through Firestone and the dealership I bought it from is paying for everything. Is it okay to mix brands or even tires with different tread wear ratings? (560 on the Toyos (1), 500 on the Coopers (2), and depends on the replacement brand (1).

Sorry if these are basic questions. I know very little about tires at this point. All of your advice is invaluable to me. I bought the G from the dealership like this and want to make sure they do everything right and not just replace it all wrong.

blnewt

iTrader: (13)

It's not ideal to mix brands but if they are the same speed rating and same type (all season, snows, summers, etc) then you'll be ok. When those Coopers wear down then just get a new rear set to match the front brand/model.

Doubledjunky

That explains everything.

Thank, guys. That really helps.

They were trying to replace the Toyo 245/40 with a Firestone Firehawk Indy 500 Summer (passenger) tire only instead of something comparable. Now I know what I can fight and what needs to be done.

Surfnazi

Don't Aggie up your car the tires are only thing connecting your car to the road and roads near you suck

Doubledjunky

Got my G back yesterday. Coopers are in the rear. and replaced the balding 245/40 with a Bridgestone Potenza S-o4 PP 225/45 on the front.

Now that the back actually has some grip, I can really feel the difference. I no longer see the "spin" light pop up on my dash every time I accelerate. I'm loving it.

The new tire is a summer tire, albiet an ultra-high performance one. I tried to fight it and get it replaced with a Toyo to match, but since I wasn't paying for any of this, I had very little push. (My dealership was paying for everything.) And Firestone swears up and down that it is okay to mix summer and all-season tires given our driving conditions.

Once it all wears down, I'll be throwing a full summer set. This far south, there's no real reason for all-season. Our seasons are Summer, Late-Summer, I-think-I-felt-a-breeze, and Early-Summer.

blnewt

iTrader: (13)

It's not really ok to mix all seasons & summers as they will have very different driving characteristics, especially when pushed. If you plan on doing any aggressive driving I'd think twice, or at least get very used to what your tires can do in a safe place.

But at least you got some of the best tires available, those S0-4s are a top three Summer tire in almost any review. I'd just drive your car w/ restraint until you're well versed, and probably plan on changing the rears to S0-4s sooner than later, you'll be glad you did IMO.

Lilly Smith

Agree with you!

Surfnazi

I bought a complete set of s04 in 245 and 275 for 900 installed at discount tire and got an additional 70 dollar gift card. I got 30k miles out of my first set

blnewt

iTrader: (13)

That's good life out of such a strong performing tire.

Surfnazi

Upsizing does give you a little more life but I also aligned the car to dead even specs and since I got lifetime alignment for 99 bucks they recheck every 6 months or when I'm bored

Coltrane1

I'd never ever mix and match a tire set, especially so on a high performance vehicle. As soon as I was financially able I'd opt for another 3 tires to match the new tire installed, or a brand of my choosing and a matched set. At the very least you'll have the same performance characteristics, and tire wear.