Tire Pressure

[jasonmac]

Vehicle manufacturers, though it depends slightly on if summers or winters are on.

 

[topnotchtouch]

yup. no more than 44 psi, but more than Ford's recommendation on my mustang. i guess because i like the stiffer feeling a higher psi gives. anything under 40 psi feels like the sidewalls are folding over or something.

Reid,



What tires are you running on your Mach1? Are you still on the stock Goodyears? If so, ditch them as soon as possible

 

[topnotchtouch]

I run 35 all the way around on my GT with BFGoodrich KDW tires. If I recall, the sticker in the glove box says 30 front and back. The KDWs have a very stiff sidewall and are very different than the stock Goodyear Gatorbacks. Here is a case where you have to use your own judgement and monitor your tire wear adjusting pressure as necessary. Initially following the manufacturer's recommendation with these tires I noticed excessive wear on the edges. The balance and alignment were perfect so I bumped the pressure up to 35 lbs and with regular rotations and constant monitoring the tread wear has been perfect ever since.



The manufacturer's recommendations are based on a certain tire so what works for one tire may not work if you replace your tires with a different type.

 

[JasonC8301]

I follow the manufacturer's recs. on the doorjamb. 30 psi all around.



After checking my tire pressure every 1000 miles (got 4K so far), tread seems normal. Even with a little spirited driving, tread wear is normal (sometimes I take corners a bit too fast and use the abs a little.)