What Tire Pressure on 225/45/17 & 245/45/17
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Member
Joined: Sep 2006
Posts: 243
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From: Toronto/Barrie
1988 300E
What Tire Pressure on 225/45/17 & 245/45/17
Hey guys,
What tire pressure should I be using on my 225/45/17's and 245/45/17's? The maximum the tire allows is 44 I believe !! Tires are Nankang NS-1's !!
Kinda curious as to what to use, I am guessing it cant be the same as the stock 195/65/15's....lol !!
Help appreciated !!
What tire pressure should I be using on my 225/45/17's and 245/45/17's? The maximum the tire allows is 44 I believe !! Tires are Nankang NS-1's !!
Kinda curious as to what to use, I am guessing it cant be the same as the stock 195/65/15's....lol !!
Help appreciated !!
MBWorld Fanatic!
Joined: May 2005
Posts: 2,494
Likes: 17
From: REHOBOTH BEACH DE
88-300CE TWIN TURBO, 99-C43, 05-G55K, 71-280SL, 94-E320 CAB, 08 CLK63 BLACK SERIES
Hey guys,
What tire pressure should I be using on my 225/45/17's and 245/45/17's? The maximum the tire allows is 44 I believe !! Tires are Nankang NS-1's !!
Kinda curious as to what to use, I am guessing it cant be the same as the stock 195/65/15's....lol !!
Help appreciated !!
What tire pressure should I be using on my 225/45/17's and 245/45/17's? The maximum the tire allows is 44 I believe !! Tires are Nankang NS-1's !!
Kinda curious as to what to use, I am guessing it cant be the same as the stock 195/65/15's....lol !!
Help appreciated !!
Super Member
Joined: Mar 2002
Posts: 826
Likes: 4
From: Southeast PA
2010 VW Golf TDI
Luke from Tirerack, the god of tires, has always said to use the same tire pressures as recommended by the gas filler door, regardless of plus sizing. I then asked about fine tuning things based on specs from other cars that showed sportier models with bigger wheels and “slightly higher” tire pressures. He agreed that going up a few pounds would increase steering response and contribute to a sportier feel, but at the expense of comfort. Max is Max, not the recommended tire pressure! I also agree that slightly higher pressure may help to protect your wheels, considering the lower profile of the tires. Just know that the higher pressure will negatively affect comfort, just like your lower profile tires. I run soft, like Mercedes recommended, because I like the smoother ride. I don’t usually race anyone on my way to work. Going up to 32lbs does seem to give it a bit more of an edgy sporty feel, but for me it also makes the ride more harsh.
MBWorld Fanatic!
Joined: May 2005
Posts: 2,494
Likes: 17
From: REHOBOTH BEACH DE
88-300CE TWIN TURBO, 99-C43, 05-G55K, 71-280SL, 94-E320 CAB, 08 CLK63 BLACK SERIES
Luke from Tirerack, the god of tires, has always said to use the same tire pressures as recommended by the gas filler door, regardless of plus sizing. I then asked about fine tuning things based on specs from other cars that showed sportier models with bigger wheels and “slightly higher” tire pressures. He agreed that going up a few pounds would increase steering response and contribute to a sportier feel, but at the expense of comfort. Max is Max, not the recommended tire pressure! I also agree that slightly higher pressure may help to protect your wheels, considering the lower profile of the tires. Just know that the higher pressure will negatively affect comfort, just like your lower profile tires. I run soft, like Mercedes recommended, because I like the smoother ride. I don’t usually race anyone on my way to work. Going up to 32lbs does seem to give it a bit more of an edgy sporty feel, but for me it also makes the ride more harsh.
Also a low pressure will expose your rims to the potential of curb rash.
As far as "comfort", the design of a low sidewall inherently lacks comfort as it affords minimal shock absorbtion regardless of pressure.
If you want comfort you will not get it with a +1 or +2 tire/rim upgrade.
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Super Member
Joined: Mar 2002
Posts: 826
Likes: 4
From: Southeast PA
2010 VW Golf TDI
Keep in mind on a low profile / wide cross section high performance tire, a low pressure will seriously diminish performance as the sidewall is not so tall.
Also a low pressure will expose your rims to the potential of curb rash.
As far as "comfort", the design of a low sidewall inherently lacks comfort as it affords minimal shock absorbtion regardless of pressure.
If you want comfort you will not get it with a +1 or +2 tire/rim upgrade.
Also a low pressure will expose your rims to the potential of curb rash.
As far as "comfort", the design of a low sidewall inherently lacks comfort as it affords minimal shock absorbtion regardless of pressure.
If you want comfort you will not get it with a +1 or +2 tire/rim upgrade.
I have a +1 set-up and I find that to be nice compromise between comfort and performance. I run 205/55/16 tires on 16” x 7.5” ET37 AMG wheels. I have tried the higher range of tire pressures and the car does seem a bit more tossable, but I think the reality is that these cars are a bit heavy to be really tossable. If you tend to drive at or above about 100mph, then the recommendation is also to run with slightly higher pressures. I typically only go over 100mph for brief periods, so I don’t worry about that too much.
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