what is the recommended tire pressure for IS250AWD with 19"

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09-10-08, 10:42 PM

#16

xuningshen

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Quote:

Originally Posted by Bichon

51 psi? That's sounds crazy. Overinflated tires are much more susceptible to damage from potholes and road hazards, are more likely to blowout, and will suffer uneven treadwear. They'll also ride very harshly.

I can see adding a few extra psi to enhance handling, especially if you're heading to the track or autocross course, but excessive overinflation will actually reduce the size of the contact patch and decrease grip.

well idk it says a max of 51 PSI lol i like running them at the max. but i don't have aftermarket, just the ISP rims from lexus

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09-10-08, 10:45 PM

#17

Byprodrive

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Quote:

Originally Posted by love67

my tires size are 225/35/19 and 255/35/19

Yeah I would start with 40 PSI

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09-10-08, 11:03 PM

#18

XprincoX

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Quote:

Originally Posted by xuningshen

well idk it says a max of 51 PSI lol i like running them at the max. but i don't have aftermarket, just the ISP rims from lexus

I hope your putting into account when your tires heat up the PSI increases by approximately 3PSI. So if you measure your tires while they are cold and its already ready 51PSI when you drive around a couple miles or if its a hot day your looking at about 54PSI. Either way running tires at the MAX PSI is definitely not recommended especially as your tires wear down. You'll be more susceptible to hydroplaning in the rain, losing traction or worst case having a blowout in the summer. It's just simple physics.