CSixDude

Getting ready to replace my front tires. Rears still have lots of miles left on them. Has anyone here ever mixed non-run-flats with run-flats?

I currently have run flats on the car, and think I want to change over to non-runflats, so I'd like to mount some non-runflats on the front.

Thoughts?

jrose7004

I've got non run flats on the front and run flats on the back with no ill effects.

Turbo6TA

Getting ready to do the same thing.

I pulled off the OEM run-flat tires off my GS when it was new.

Put Nitto Invo (non RF) on the car.

The rear tires are now getting bald, so I am going to put the OEM rear tires (run-flats) back on it and leave the Nitto's (non RF) on the front.

CSixDude

How do you like the Nitto Invo's?

Turbo6TA

The Nitto 'Invo' is a pretty good tire for the price.

Cheapest deal on GS / Z06 sized tires right now is a set of (4) Cooper Zeon RS3-S for $662 + $51 shipping (to Florida)

TreadDepot

mysloride

Guy's,

I ran two different sets of Cooper Zeon RS3-S tires on my SRT8's and had terrible issues from both sets. They would not stay in balance and I had both cars 4-wheel aligned and re-balanced and it made no difference.

If you push your car hard at all...IMO do not buy Cooper tires for performance cars

CSixDude

I'm not able to find the Nitto Invo's online. Where do you buy them from?

Seadawg

Have you pushed it really hard in curves? I would think the flex in the sidewalls would cause some issues, but I have no personal experience to base it on.

MARSC6

You will always be told not to mix tires. You will also be told to replace all the tires at once. Your handling can be affected. The traction is different between brands and tires lose grip with age.

I've driven with runflats on the front and standard tires on the rear without issue but that was just temporary.

CSixDude

yea, and the folks that always will tell you this are the ones working behind the counter at the tire store trying to sell you tires.

I've always heard all these warning about not mixing brands, and types, but I've never heard of anyone having a problem doing it. So color me skeptical.

cclive

You could put a different make of tire at each corner of the car and if you just went straight on the freeway and drove around a city at 35 mph, there would be no problems at all. But, what I would worry about is the one time in a million when some big piece of something falls off a truck in front of you at 75 mph on the highway and you need to make a very serious emergency maneuver...how will the car behave? If it is a question of avoiding a deer in the road or a kid on a bicycle...how will the car behave? As with so many situations on this forum, there are lots of people who have done things that are generally not recommended and "never had a problem". I would suggest keeping that 'one in a million' situation in mind.

Gearhead Jim

Actually, we did have someone post here a year or so ago, that with mixed tires on his car it was unstable just driving down the road. Don't recall what combination he had.

The problem with mixed tires is that they can seem fine under normal driving conditions but suddenly bite you in the butt if you start having fun or need to do an emergency escape maneuver.

I recall being up at Road America a few years ago and looking at a nice M3, driven by an instructor, that was totaled when his mixed tires produced sudden breakaway oversteer. He said it was fine just driving up there. But suddenly...

Also, the used rear tires will certainly have less tread than new fronts, so handling in the rain could get dicey.

If OP's rear tires are really that good, just get another set of identical fronts and replace all of them at once, next time around.

jrose7004

I haven't noticed anything strange. I plan on getting the same tire all around here pretty quick.

Suds

I ran 2 Auto-x days in my BMW 135 with runflats in front, non in the rear. Car actually handled great on the edge, I was really careful at first but after a couple of runs I really pushed it.

Boomer111

Cost of owning a vehicle comes responsibity for proper maintance. Mixing tires on a performance car is a poor action. Ya you can do it and drive the car around like a 61 Cadalliac but to use the car for performance your asking for variables to come into play that may be uncontrolled.

I would recommended biting the bullet and replacing all four corners with your preferred tire.

Different compounds and traction elements will cause the car to handle differently in the turns when pushed without doubt.

Knob Jockey

I got my Nitto Invo's from Discount Tire.

I ran them on the rear with Michellin PS ZP's (runflats) on the front.

At the limits of handling the fronts would 'let go' before the rears producing an easily controlled bit of under-steer. IMO if you have the runflats on the rear only, handling may be more unpredictable and the resulting over-steer condition might be harder to catch.

In 'normal' spirited street driving you should be okay with the tire mix, but obviously it's not optimum.

cclive

Amazon has lots of them in different sizes.