Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
...
If the tire is even a little different in width than the OEM, the pressure must be changed to put the same rubber on the ground.
Ah, now I get what you meant...I musta be 'seniorizing'.
No prob, no biggie...
I'm still amazed at the length/breadth of this thread based on the OP's
60 psi spare vs 32 psi oe spec tire misunderstanding.
As for 'non-oe' tire sizes, I've had my share of '+1s' and even a couple of '+2' sizings, and have even stuffed a few 'taller/bigger' than oe sizes on certain rims. The ultimate psi to use was easy to determine, and since we aren't talking track use, of little concern for street stuff, imo.
I'd never inflate to the maximum pressure (cold) in the Summer since that's going to rise when the tyre warms and exceed the maximum marked on the tyre.
But as a rule of thumb, I too go more on wear pattern....if they are wearing on the outer edges, then a higher pressure. If they wear in the centre, then lower pressure.
Don't be afraid to inflate your tire in the summer to the specs. The Max PSI stamped on the tire assumes a cold tire. It is assumed that after driving for a while, the tire will get hot and the PSI will increase, sometimes above the stamped PSI on the tire. The engineers that designed the tire already take that into consideration.
I work with trucks that have tires stamped with 120 Cold PSI Max. After a long day of driving in the summer, it is normal to see the tires with 150 PSI. On vehicles equipped with SmartTire, the alarm will go off if you deflate them below that.
Don't be afraid to inflate your tire in the summer to the specs. The Max PSI stamped on the tire assumes a cold tire. It is assumed that after driving for a while, the tire will get hot and the PSI will increase, sometimes above the stamped PSI on the tire. The engineers that designed the tire already take that into consideration....
Thanks for this info.
My sticker on my '08 coupe says all 4 Pirelli tires should be inflated to 35 psi. I am the only person in an otherwise empty car and 90% of my miles are city miles where I rarely go over 50 mph during my 8.4 mile daily commute. So if I put 35 lbs in when tires are cold, when I drive during the summer or from the heat of the day in the parking lot, they're 37-39 psi when I drive home.
If I get on the interstate, how high can my tire pressure go and still remain safe to drive during the summer months? I've only ever seen my "tire pressure light" go on when my tire pressure was too low in the winter. I have TPMS that will tell me the tire pressure on each tire at any given time. So it's easy to monitor.
All my oldies called for between 24 and 28 psi except for my 79 T-Bird which calls for 30 front and back. I've always run mine at 30 ever since I started driving.
I think you have the wrong tires if there is not a range on your CAR specs that matches your tires.
THE MANUFACTURER of the vehicle knows exactly what pressure ranges you can use for THEIR vehicle design.
Please register to post and access all features of our very popular forum. It is free and quick. Over $68,000 in prizes has already been given out to active posters on our forum. Additional giveaways are planned.
Detailed information about all U.S. cities, counties, and zip codes on our site: City-data.com.
Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
