Finally order some tires!!!
6th Gear Member
Joined: Jan 2004
Posts: 12,575
From: United States
RE: Finally order some tires!!!
Just FYI, don't drop below about 18 PSI on your 315 nittos. I had the 275s and it was ok to go down to around 15 PSI, but in my experence when you drop a 315 below about 18 PSI (on a 10.5 rear tire) the tire stops hooking.
I think this is because the pressure is so low on such a large (wide) tire that the inner part of the tire acutally starts to loose contact with the ground, and your only touching on the outsides (at least with proper contact patch).
Try 20, then drop it to 18, but any more and you will probably loose traction. I know that with 15 PSI I couldn't getunder a 2.1 60
I think this is because the pressure is so low on such a large (wide) tire that the inner part of the tire acutally starts to loose contact with the ground, and your only touching on the outsides (at least with proper contact patch).
Try 20, then drop it to 18, but any more and you will probably loose traction. I know that with 15 PSI I couldn't getunder a 2.1 60
Thread Starter
4th Gear Member
Joined: Mar 2007
Posts: 1,148
From:
RE: Finally order some tires!!!
ORIGINAL: 2000GT4.6
Just FYI, don't drop below about 18 PSI on your 315 nittos. I had the 275s and it was ok to go down to around 15 PSI, but in my experence when you drop a 315 below about 18 PSI (on a 10.5 rear tire) the tire stops hooking.
I think this is because the pressure is so low on such a large (wide) tire that the inner part of the tire acutally starts to loose contact with the ground, and your only touching on the outsides (at least with proper contact patch).
Try 20, then drop it to 18, but any more and you will probably loose traction. I know that with 15 PSI I couldn't getunder a 2.1 60
Just FYI, don't drop below about 18 PSI on your 315 nittos. I had the 275s and it was ok to go down to around 15 PSI, but in my experence when you drop a 315 below about 18 PSI (on a 10.5 rear tire) the tire stops hooking.
I think this is because the pressure is so low on such a large (wide) tire that the inner part of the tire acutally starts to loose contact with the ground, and your only touching on the outsides (at least with proper contact patch).
Try 20, then drop it to 18, but any more and you will probably loose traction. I know that with 15 PSI I couldn't getunder a 2.1 60
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