What is the correct tyre pressure for 17'' alloys?

Answer 1

i own a repair shop,and i always look on the tire its self,to see what it says on it,,this is the best way to do this,you cant go by what the owners manual says unless its a new vehicle and still has the original tires on it,,but that's the best and only way to get them right is go by what the tire has written on it,,its in tiny print,but its there,good luck with it,i hope this help,s.

Answer 2

A short, proper, direct answer is impossible due to the lack of information provided. One thing I can say, and I hate to do it is; Sorry Dodgeman, this is another tire related issue you are flat wrong about.

NEVER look at the tire sidewall for tire pressure recommendations. Why? Because the tires sidewall does not give a recommended inflation pressure. Only a load carrying capacity at maximum pressure.

If these 17-inch tires are the OE size, then go by the placard inside the drivers door or what it says in your owners manual. The people who designed and built your car know best.

If your car didn't originally come with 17-inch wheels and tires the door placard and your owners manual won't necessarily give the correct information, so you can't go by that. The 17-inch tires may have a different load carrying capacity than the smaller OE tires at the same pressure, which means some change would be required.

Let me illustrate with a popular example. Tires are sized under two different, and to some extend competing standards; P-Metric sizing (the tire size will start with the letter P) and Euro-Metric (which has no letter in the beginning of the size. A P-Metric and a Euro-Metric tire in the same size may not have the same load carrying capacity at the same pressure.

A lot of small Japanese cars come with P185/65R14 85S tires as original equipment (OE). A lot of people like to replace these 14-inch tires with 17-inch tires. The correct replacement size in 17-inch is 205/40R17 to maintain the same overall diameter.

Let's say the recommended inflation pressure of the OE 14-inch tire on our imaginary car is 32 psi front & rear. At that pressure this tire has a load carrying capacity of 1,069 pounds. A P-Metic P205/40R17 tire with a service rating of 80 at the same pressure has a load carrying capacity of just 849 pounds. Therefore, if you follow the door placard, which was written with the 14-inch tire in mind you are under-loading the tires by more than 200 pounds each or close to 900 pounds on the whole vehicle! More pressure doesn't help. The max inflation pressure of this P-Metric tire is 35 psi at which the load only increases to 882 pounds. In short, you should not even use this tire.

But there is hope. The only proper way to do this upgrade is to use an extra-load Euro-Metric (not P-metric) sized 205/70R17XL tire with a service rating of 84. This tire has a higher maximum inflation pressure and a higher maximum load carrying capacity than a P-Metric tire in the same size. It needs to be inflated to 41 psi to maintain the same load carrying capacity as the OE 14-inch tire but it will work.

Of course, this is just an example of the kinds of things that need to be considered. Since you don't tell us what kind of car it is and whether or not these tires are OE a specific answer is impossible.

Answer 3

Depends on the car, the width and profile of the tyre, the load being carried and the speeds being driven at.

Do not use the pressure stated on the tyre - that is the maximum pressure that the tyre is designed to cope with, and will always be higher than the correct pressure for any particular car.

Answer 4

The figures on the sidewall of the tire is the max air pressure for the tires. Myself, I like to run the pressure at about 2 or 3 lbs of pressure below that. It will give you a little rougher ride, but it will save you a little on gas and increase your mileage a little. good luck.

Answer 5

it should say the pressure on the frame of the drivers door, it dosnt really matter what kinda of wheels, but cars use a specific pressure to run good, and get the right grip, it has to do with how much your car weighs, but normaly its around 30 psi give or take a few

Answer 6

Yuor tire preassure depends on a lot of variables like tires; load temp. city driving, highway, and so on. 32 psi is one preassure to start with.

Answer 7

check the sticker on the inside of the driver door

Answer 8

Depends on the car.

Answer 9

350 psi

Answer 10

Look on the tire it will tell you the min. and max of the pressure you need to have in it.