Minimum/Maximum tire pressure on 17' wheels

[Frankblack0503]

Hey all,
wanna know if my tire pressure is not 2 high on my 17' wheels...
(feels like i'm jumping on the road)
What is the max/min tirepressure for this size of wheels ?

Thanks !

[Blind Guy]

[quote=Frankblack0503;968682]Hey all,
wanna know if my tire pressure is not 2 high on my 17' wheels...
(feels like i'm jumping on the road)
What is the max/min tirepressure for this size of wheels ?
* Here in the U.S. we measure our pressures in Pounds Per Square Inch, or psi, your measurements I'm sure are different, so some conversions may be necessary.

The maximum tire pressure is noted on the tire's sidewall.

* The maximum tire pressure will depend on the type of performance you desire from the car, fuel economy, handling, ride comfort, braking, or a combination of all those factors.

Comfort will require lower pressures, and maximum fuel economy will demand higher pressures, and a compromise of all those items will mean a pressure somewhere in the middle.

*NOTE* The 17" tires are EXTREMELY sensitive to increases and decreases in tire pressures. Play with those pressures, a few lbs. at a time, and find a pressure that suits your wants and needs.

David (aka Blind Guy)
Thanks

[a priori]

All three OEM tire choices for the 17" wheels on US Prius models (2010, that is) have maximum sidewall pressure ratings of 51psi.

[Buckeye]

Originally Posted by a priori

All three OEM tire choices for the 17" wheels on US Prius models (2010, that is) have maximum sidewall pressure ratings of 51psi.

A Priori: Can you tell us the tire pressure you use on your 17" tires? Thanks.

[wvgasguy]

Originally Posted by Frankblack0503

Hey all,
wanna know if my tire pressure is not 2 high on my 17' wheels...
(feels like i'm jumping on the road)
What is the max/min tirepressure for this size of wheels ?

Thanks !

So what is your pressure set at?

[a priori]

Originally Posted by Buckeye

A Priori: Can you tell us the tire pressure you use on your 17" tires? Thanks.

I've varied it quite a bit across my 4+ months of use.

I started at 38/37 (front/rear), then I gradually moved it up the scale to as high as 48/47. I've dropped it and raised it several times. Presently, I'm running at 45/44. Higher than that the ride not only was a bit too harsh, but I also thought the handling was being affected negatively. Lower than that I've felt the mileage really dropped. I've enjoyed the handling and the ride better at 40 and higher, and I've found the fuel economy to be noticeably better once going above 38.

Hope this helps.

Remember: This is just what I do, and the numbers are adjusted by me based on conditions. Also, these are pressures on the 215/45 R17 tires with max sidewall pressure (cold) of 51psi.

[Econ]

Originally Posted by a priori

I've varied it quite a bit across my 4+ months of use.

I started at 38/37 (front/rear), then I gradually moved it up the scale to as high as 48/47. I've dropped it and raised it several times. Presently, I'm running at 45/44. Higher than that the ride not only was a bit too harsh, but I also thought the handling was being affected negatively. Lower than that I've felt the mileage really dropped. I've enjoyed the handling and the ride better at 40 and higher, and I've found the fuel economy to be noticeably better once going above 38.

Hope this helps.

Remember: This is just what I do, and the numbers are adjusted by me based on conditions. Also, these are pressures on the 215/45 R17 tires with max sidewall pressure (cold) of 51psi.

What does the drivers side door plaque say for the correct inflation?
Usually these are the best for the suspension etc.

[a priori]

Originally Posted by Econ

What does the drivers side door plaque say for the correct inflation?
Usually these are the best for the suspension etc.

I believe the inside door recommendation is for 33/32, but I'd have to confirm by actually going to my car!

If your next question is: Why are you so much higher than the recommended tire pressure, then you'll need to spend some time reading the numerous posts on tire pressure. One that you could read that concerns the 2010 17" wheels is my earlier thread: Tire Pressure for the 215/45 17s -- Here We Go Again!

I had a 2007 Prius, and the wear on the tires at the recommended pressure was too high. Once I bumped the pressure up to 42/40 and, later, 44/42, the wear dropped down, the fuel economy jumped up, and the ride felt better (bumpier, perhaps, but better control).

[RodJo]

Originally Posted by Econ

What does the drivers side door plaque say for the correct inflation?
Usually these are the best for the suspension etc.

And safety..... See post #12 in What's the best Tire Pressure for FE/safety/handling?

[Frankblack0503]

have 33/32 pressure currently