Quote:
Originally Posted by serialk11r
My car has 26psi front 32psi rear written on it, and factory suspension is not the most comfy thing ever, but after I increased the pressure slightly I think it's noticably less comfy.
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I have an MR2 Spyder in my stable as well. What I found to be VERY important with many mid-engined cars, is the front-to-rear air pressure differential. If I run with 40psi both front and rear, the car is very 'squirrely' out on the highway. Lowering the front tire pressure to 34psi and leaving the rears set at 40psi cures that. BTW, for going around corners fast with performance tires, increased tire pressure reduces sidewall flex and is faster. Reduced tire pressures are only used on drag racing slicks for increased traction, not for cars that corner fast.
The tire store guys have it force-fed and beat into their heads to use the factory recommended tire pressures as a safety, um, liability reduction tactic. I guess auto repair stores have been successfully sued after a customer got into an accident, were under/over inflated tires have been mentioned as a contributing cause of an accident. Point being, don't bother asking the tire store to do it, you just re-set your own tire pressure after leaving the repair shop.