silverGTvert

Just had to replace the two front tires. Put on same size as before (stock) now I have a real bad wobble in the steering wheel. It really is hardly noticable at low speeds but at 60 mph the steering wheels shakes something fierce. It is actually a little difficult to hold the steering wheel. Did they do a bad balance? Or maybe I just have a bad set of tires?

mustangspeeder

Take a look at the treads. I believe some are designed to only rotate a certain way. Besides that, I'd make sure that all of the lugs are tightened correctly.

cambostang

as stated above and if the wheel is on good..has to be a really bad balancing or flat spot in tire which the latter I doubt. some places cannot balance good.

Mongoose

Go back to where you purchased the tires.

bob

Probably balance, how did they balance the wheels? The best way to balance the wheel would have been dynamic using the proper size cone in the back and a pin-plate (lug simulator) in the front. If your touchy about wheel weights on the outside, then a mag balance with clip on weights toward the inside and stick-on weights behind the spokes or in the middle of the rim works pretty good too. Aside from that if runout is excessive you will notice a problem too.

Btw, its best to install new tires on the rear if all things are equal (same speed rating size, etc).

http://www.michelinman.com/care/tip6.html#5

check out the video at the bottom

Stoenr

Took the words right outta my mouth! lol But I would have used a Goodyear link

bob

Yeah, its counter intuitive but once you start thinking about it, new tires on the rear make sense. A while back (like 10 or 11 years ago), I was talking to a Yokohoma rep. The guy explained it like this "You want your best tires where you have the least amount of control. Old or worn out tires can still be steered, but you only have the brakes to control the rear".

Thats the simple version of how tire placement can affect vehicle performance.

I'll have to check out the goodyear website and see what they say?

the cable guy

There are only a few things that can make the wheels wobble so bad they make it hard to hold the steering wheel. Either the tires have something seriously wrong with them ( flat spot, broken belt ), they have no idea how to balance a tire ( I prefer stick on weights on the backside of the wheel where you don't see tham and they don't scuff the finish ), or they bent one of your wheels mounting a tire. Any reputable tire shop should be able spot one of those three things in 5 minutes or less.

As far as putting your best tires where you have the least control, consider that bad front tires will hydroplane faster and that is the last thing you want to happen.
I usually buy tires in a set of four, but if I replace 2, the new ones always go on the front and the best of the old ones go on the rear.
If you have a good alignment and rotate the tires every 6,000 miles or so, all 4 tires will generally wear out about the same time; unless you do a lot of burnouts.

Stoenr

Hehe, I was just being funny, as I work for Goodyear

flight96

While were talking tires, here's a question....Im getting GT take off Bullits with 2 good tires. I have to buy 2 new tires. Do the new ones have to be the same speed rate as the "old" ones? I believe the Pirelli's that came with the GT are 235/55/RZ17 (Z being the speed rate) ??

lodom

I wouldn't go with less than the factory rated tires, since the car is set up to run with Z-rated tires. Using a lower rated one would most likely negatively impact the handling of the car. It would be be ok to go with a higher speed rated tire.

Stoenr

+1

flight96

Ahh...except for the fact that Im putting these on a V6. Which come with "H" rated tires.