If the sides are wearing, that's a sign your pressures are too low (or that you're beating your car mercilessly).shahin said:The sides of the tire seem to be wearing down and I was wondering if I should lessen the pressure in the tires or increase it. Also, what do you guys recommend for the pressure.
Yeah, he doesn't specificy what car. Pressure recommendations differ for staggered vs non-staggered setups.nate328Ci said:
E46 M3, right?
What pressures are you at?
TD is right
I suppose so, but I would stick to the factory recommendations in this car. It has an oversteer bias according to R&TTD said:
Yeah, he doesn't specificy what car. Pressure recommendations differ for staggered vs non-staggered setups.
I ditto atyclb... "oversteer"?!?!?!nate328Ci said:
I suppose so, but I would stick to the factory recommendations in this car. It has an oversteer bias according to R&T
Yes, I am familiar with this.TD said:We KNOW what over and understeer are. There is not one current production car that has inherent OVERsteer but many/most/damn near all have inherent UNDERsteer. The staggereed tire setup common on many SP BMWs exists solely to impart more UNDERsteer. Running factory tire pressures (which always call for LOWER pressures up front) also impart more UNDERsteer.
"I pick up a little mid-corner understeer off power, but as soon as I touch the thottle again, the back wants to be sideways. The only way I really find out haw to be smooth with it is just put my foot down on the throttle, get the tires spinning, and then ease it into a nice slide versus trying to correct it"atyclb said:I'd have to think "inherent" and "driver-induced" are 2 different things. I think the serious track people go 255 or 265 all the way around.
Most people buying new tires go 245/275 and use equal pressure all around.
You are drifting the car? Yea, higher pressures will keep the sidewalls from touching the pavement :lmao:shahin said:I have an m3 with 19 inch factory option. I went autocrossing yesterday and my pressures were at 39 front and 37 back. I was drifting alot.
I increased them this morning to 42 front and 40 back. Is this ok??