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Old 04-17-2016, 08:34 PM   #4 (permalink)
mechcd
EcoModding Lurker
 
Join Date: Dec 2014
Location: Ohio
Posts: 11

Carl Winslow - '02 Ford Crown Victoria Police Interceptor
90 day: 23.89 mpg (US)

Penelope - '99 Pontiac Grand Prix GTP
90 day: 31.96 mpg (US)

The Saabray - '84 Honda VF700S Sabre
90 day: 30.36 mpg (US)

The (Silver) Ghost - '99 Ford Crown Victoria Police Interceptor
90 day: 24.26 mpg (US)
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Quote:
Originally Posted by mcrews View Post
I would think going a size up on the tires (not the rims) would help the mileage. I was able to pick up about 4mpg on the 02 InfinitiQ45S going 1 six up. I did a lot of hgwy driving.
Also, are you at 40+ psi?
Welcome!

I would give that a shot if I didn't already have a pile of extra 225/60/16s. 4 mpg is a lot for a relatively simple change!

I have the tire pressure up to 44 PSI which is the sidewall max rating. I haven't seen any increased wear in the center of the tire. There is some other weird wear but that is because the steering system needs overhauled. I'm afraid to go higher for reliability reasons. I drive around 60 miles a day and the tires are getting old
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