225/40-18 psi

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06-10-2003, 07:45 PM

ThurzNite

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225/40-18 psi

I just got these tires for my 18x7.5 rims. I dunno what psi to run at. TireRack said 36psi, but that seems low to me. Anybody else have any experience they wanna add? Thanx!

Jae

06-11-2003, 12:02 AM

Nismo

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im on 37/31 right now on my 235/40/18s

06-11-2003, 12:16 AM

drewm

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36 is good

I'm running 36/34 currently on 18x7.5

I use to run 40psi, but traction went to crap because less of the tire was on the ground.
They generally say for each rim size up, run +1 psi over stock, and since stock is something like 33/30, well, you can try them out.

06-11-2003, 09:42 AM

Str8ridin

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I'd keep them the same as stock if you don't want unusual wear. Even though the volume might change, the PSI should remain the same. Adjust accordingly if you are looking for a differnece in handling though.