Tire PSI after sizing up wheels?

Tech UnRaveled · 05-15-2021, 10:57 AM

I finally put my new wheels on yesterday, and I sized them up from the factory.

Factory:
225/40/19
255/35/19

Upgrade:
245/35/20
275/30/20

I found some info on tacomaworld.com/tirecalc that helped calculate the correct PSI, but I have no way of knowing if it's accurate.

Does anyone know if this is accurate or have another way to calculate it.

mmm-five · 05-15-2021, 02:57 PM

I’d be more concerned that your wheels/tyres don’t seem to fit inside the fender.

J555 · 05-15-2021, 04:21 PM

Recently fitted exactly the same tires. Started with little higher pressures, but currently testing 34/37 psi. So far, they seem to be a good pressures for daily driving.

djacinto · 05-16-2021, 11:12 AM

Quote:

Originally Posted by J555

Recently fitted exactly the same tires. Started with little higher pressures, but currently testing 34/37 psi. So far, they seem to be good a good pressures for daily driving.

I'm also currently at 34/38 for my square 255/35

It feels very comfortable and I think I may keep it there

chowser51 · 05-17-2021, 03:17 AM

Quote:

Originally Posted by mmm-five

I’d be more concerned that your wheels/tyres don’t seem to fit inside the fender.

He’s having issues with rubbing now since he lowered the car.

Tech UnRaveled · 05-17-2021, 05:09 AM

Quote:

Originally Posted by chowser51

He’s having issues with rubbing now since he lowered the car.

Yes, my bigger problem is I purchased the wrong offset. The rear is +25... So without having to purchase new wheels I'm wondering if adjusting the camber a few degrees will solve the problem.

erikejw · 05-17-2021, 10:49 AM

I seems ok.

peaches. · 05-23-2021, 09:34 PM

The rear wheel is protruding...

05-15-2021, 10:57 AM	#1
Tech UnRaveled Private 18 Rep 89 Posts Drives: BMW 440i Join Date: Oct 2020 Location: Coconut Creek, FL iTrader: (0)	Tire PSI after sizing up wheels? I finally put my new wheels on yesterday, and I sized them up from the factory. Factory: 225/40/19 255/35/19 Upgrade: 245/35/20 275/30/20 I found some info on tacomaworld.com/tirecalc that helped calculate the correct PSI, but I have no way of knowing if it's accurate. Does anyone know if this is accurate or have another way to calculate it. Attached Images
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05-15-2021, 02:57 PM	#2
mmm-five First Lieutenant 222 Rep 375 Posts Drives: 2006 Z4MC + 2015 320D M-Sport Join Date: Aug 2017 Location: Liverpool, UK iTrader: (0)	I’d be more concerned that your wheels/tyres don’t seem to fit inside the fender.
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05-15-2021, 04:21 PM	#3
J555 Captain 569 Rep 611 Posts Drives: F31 LCI 340iX Join Date: Mar 2020 Location: Europe iTrader: (0)	Recently fitted exactly the same tires. Started with little higher pressures, but currently testing 34/37 psi. So far, they seem to be a good pressures for daily driving. Last edited by J555; 05-16-2021 at 01:30 PM..
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05-17-2021, 10:49 AM	#7
erikejw New Member 5 Rep 6 Posts Drives: BMW 335i Join Date: May 2021 Location: Sweden iTrader: (0)	I seems ok.
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05-23-2021, 09:34 PM	#8
peaches. Registered 0 Rep 2 Posts Drives: bmw f30 Join Date: May 2021 Location: south korea iTrader: (0)	The rear wheel is protruding...
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