olapua

I've read alot of posts saying it's a bad idea to mix tire brands front and rear. Why is it bad
I just replaced my rear tires with the Proxes T1R's in 245/45/16 and they are super grippy. My fronts are Potenzas RE750"s in 205/55/16. They seem a little harder and maybe not so grippy. It won't mattter around town, but will it be too squirrely in front when I push it on the twisty's
Has anyone out there had bad experiences when mixing brands and rubber compounds? If it's dangerous I'll put the T1R's all around

guardiase

I am kind of in the same boat as you, though they are same brand, just different class tires. I just got a pair of Kumho Ecsta SPTs for the rears and I didn't realize I still have the Ecsta MXs I used for the fronts with still plenty of tread left in them (otherwise I would've gotten another pair of those).

With the MX being classed as Extreme Performance Summer and the SPT Ultra-High Performance Summer I'd imagine I'd be getting quite a bit more oversteer since the MX will supposedly stick better than the SPT. Hopefully someone out there could give more insight about these 2 combos?

Jim@tirerack

The problem is at the limits you end up with a car that is not going to handle the same front to rear. Depending on which tire is better tha car will either under steer or over steer. Below is a link that discusses the reason why.
If I can help let me know.


http://www.tirerack.com/tires/tiretech/tec....jsp?techid=136

olapua

Thanks, Jim I finally understand that it's not only a comfort but safety issue as well. And thanks for the link. It has alot of good info.

//steve\\

It really just depends. I wouldn't call it unsafe if setup properly. Lets say I really want to run a non-staggered setup. we'll go with 17x9s 255s all around. Most people will say that setup is very prone to oversteer. solution, put better tires out back than up front to offset the grip. I personally wouldn't do it though.

olapua

[QUOTE=Jim@tirerack,May 21 2009, 08:24 AM]The problem is at the limits you end up with a car that is not going to handle the same front to rear.