hey everybody, I'm curious as to what everyone runs their tire pressures at? I know what the recommended pressures are, 31/33, but I generally run mine 2 lbs below the rec. pressures. The reason for this is the smoother ride in the car; those 8 lbs really make a big difference in the ride and I don't really notice any difference in the handling of the car. I realize that any lower will trigger the TPM, but just wondered what all of you think. Another thought I had, has anybody put runflats on their car? And if so, how do you rate them? That's all for now. Later, Caught in a Xfire.

 

I overinflate mine by 1-2 lbs per tire for better handling & fuel economy with a slight trade-off in ride smoothness.

Recently got over 30 hwy. mpg going to the Spring Dragon (even traveling with Valk's 85-90 mph convoy thru KY & TN).

I have no first-hand experience with runflats, but have not heard anything good about 'em - choppy ride & handling. However, maybe the recent technology has improved these issues. TireRack should have the answers.

 

I generally do what the manufacturer suggests.

I enjoy a smooth ride and want the most gas mileage I can get, but I want to get the most mileage out of these expensive tires.

 

Some great run-flats.

They come that way!!

http://www.shadetreemechanic.com/mic...ire_design.htm

http://www.fastcoolcars.com/airless-tires.htm

But seriously, My friends have Bridgestone RF's on their Z4 and it's pretty rough.

 

I was always told to run tires at +2 of recommended psi when doing lots of high speed driving, which I do. It's supposed to reduce flex and heat buildup, which kills tires. Running them below recommended pressure is not a good idea. I think I run the n/a's at 32-35 and the SRT6 at 36.

 

I usually run tyre pressures at Rated Max less 10%

 

Well, in my situation, my car is not a daily driver. So, tire wear and fuel economy is not high on my list. At our age comfort comes first over economy. As for running the tires at a higher than recommended pressure, I think may improve fuel economy, but the handling is not improved b/c you're riding on the center of the tire. Also, over-inflation is a no-no at high speed b/c as the tires heat up the air in them expands and the pressure increases anywhere from 2-4 lbs., depending on how far and hot you drive them. I have Contis on my car and the rears have half way worn with 11000 mi so maybe I'll get another 7000 mi on them, but the front have very little wear. So when the time comes to replace, I'll buy a set of used contis for the rear, allowing the front to catch up on the wear, and I'll save alot of money. I think the reason the rear tires wear faster is the fact that they're the pulling tires, and the rear is so light, so they work harder to keep the car on the road. Anybody have any other input? Caught in a Xfire.