[RallySnake]

Dugly,

Bigger is not always better. I ran a bunch of 295/50/15 rear tires on my car before I tried 275/60/15's. They are slightly taller which should help your speedometer problem. They also fill up the fender better. But the important thing is the controllable transition into a slide. The 295's hold to a very high g load but when they let go, it's pretty sudden and hard to catch. The Mickey Thompson S/T's give warning at the limit and let you push the slide as much as you like. However, like all tires, they get harder as they age. Mine are about 5 years old with about 3/8ths of the tread left. On a recent track day, they were Ok but didn't have nearly the grip they did when new. About time for some new 255/60/15's on the front and 275/60/15's on the rear. Right now, for general purpose and some track time, I don't think any other tire is as good, unless you can afford the Avons ($1,600). Note: the Mickey S/R's are made with a harder compound rubber.

One other thing. It is surprising how much wind resistance wider tires have. When running at higher speeds, the 295's have much more drag and you have to use more power (and gas) to maintain the speed. Of course the smaller diameter requires more RPM also.

RS