Tire Pressure VS tire wear

[LA VETT]

I am running about 29 PSI (cold) in my rear Goodyear Run-Flat tires and the tread is wearing faster in the center then on the sides. Are the dynamics different on run flats in relation to tire pressure VS tire wear???
What pressure should I be using to get more a even tread wear pattern??

 

[Mr. Lucky]

28-30 PSI cold is the normal accepted range. Are these stock size runflats on stock wheels? The reason I ask is because running tires on too-narrow wheels will cause the same wear pattern as overinflation.

 

[Tuna]

I used 30 psi cold on my 03 with the stock run-flats and got 32,000 miles out of them without any uneven tire wear. 30 is the recommended cold tire pressure.

When we had a 98, the rear tires wore more quickly but my wife was always hazing the tires every time she left a stop light or stop sign.

 

[wishuwerehere82]

There seems to be a wide variation of tire wear among C5 owners. I'm like you. I keep 29-30 PSI in the rear tires and have worn out the centers of both of them in 16,000 miles on stock wheels. They have a good 1/4" of tread on the outsides, but down to the wear bars in the middle. I don't have a good solution to the problem other than replace them with something else and hope that it's an artifact of the tires, or that run of tires from the factory.

 

[kingman]

Run flat question.

On the 2002 models did they all come with run flats and how many miles of normal driving can you get out of them ??

Alan

 

[DRTH VTR]

On the 2002 models did they all come with run flats and how many miles of normal driving can you get out of them ??

Alan

All but the Z06 came with run-flats.

How many miles you get depends on how you drive. You can take the tires off in a few days if you drive hard enough. But I have read of lots of people who get 25-30,000 miles on a set.

 

[kingman]

Thanks, because l'm picking up, l hope a 2002 with 12,000 miles lightly driven and expected to have at least 10,000 miles left over.

Alan

 

[LA VETT]

Tire pressure

28-30 PSI cold is the normal accepted range. Are these stock size runflats on stock wheels? The reason I ask is because running tires on too-narrow wheels will cause the same wear pattern as overinflation.

I am running stock rims!
I think I will boost the pressure up a couple of PSI and see if it helps.
Thanks for all of the input on this thread.
LA VETT

 

[SANOLS1]

I had the same problem a while back and I just bought a new set of Runflats for the rear only. I now run my pressure at 28 lbs in hopes that they will last a bit longer than the 15K I got out of the originals.
I don't think I would boost the pressure, I ran my last set at around 31~32 lbs hoping to help the mileage. It didn't help. :ugh

 

[Samauriwarrior]

It wouldn't be because of ? Ya think?

 

[gmjunkie]

I had the same problem a while back and I just bought a new set of Runflats for the rear only. I now run my pressure at 28 lbs in hopes that they will last a bit longer than the 15K I got out of the originals.
I don't think I would boost the pressure, I ran my last set at around 31~32 lbs hoping to help the mileage. It didn't help. :ugh

You will!! I ran my first set at 27-28 rear and 29 front and got 27,000 mi and still had tread left!!

 

[redvett]

In my 40+ years of driving Corvettes the formula hasent changed its 2 sets rear for 1 set fronts.

 

[Mr. Lucky]

I am running stock rims!
I think I will boost the pressure up a couple of PSI and see if it helps.

No - reduce the pressure, don't increase it. Assuming fitment/alignment are not an issue (and it sounds like it isn't), excessive wear in the center is caused by overinflation (i.e., maybe your pressure gauge reads a couple PSI higher than actual). The low pressure alert will display in the DIC at 25 PSI or lower.

 

[Remo]

Tire Pressure vs. Tire Wear

There's an old saying - "the more pressure (of any kind) you put on a tire, the more the wear".:L But seriously folks - anyone thinking about switching to Goodyear GS-D3's when the EMT's finally wear out?

Remo:cool

 

[gmjunkie]

There's an old saying - "the more pressure (of any kind) you put on a tire, the more the wear".:L But seriously folks - anyone thinking about switching to Goodyear GS-D3's when the EMT's finally wear out?

Remo:cool

No!!I put Kumho ASX's on Mine. And they are 10x Quieter than the Goodyears ever were!! Plus it don't Hydroplane 1/10 as bad as it did with the Goodyears!! And Rides Better Too!!

 

[Tomrw]

I run 29-30 psi cold and got 32,000 on the first set. Now have 12,000 on set number 2 and isn't evident that there is any uneven ware.
Tom

 

[fdxpilot]

I run 30 front/ 28 rear because of the center wear on the rears. Stock Runflats, 29500 mi so far. Rear tread almost gone, lots of front left.

 

[Tom]

On both my 1999, and 2004, I have been running,29 psi in the rears, and 31 psi in the fronts. I had 20,000 miles on the 1999, and the tires were wearing fairly even. I only have 8,400 miles on the 2004, and they look to be wearing eve, also.

 

[TorchRedC5]

Tom, I got this from another forum from a retired GM engineer.

"You Runflats work best at around 30/31 psi hot...

It is not as difficult as the wannabe's would make it out to be.,..

there is little variance in road temps in the winter, spring and fall.. in most areas..

20f to 50 F... is common..

The real tire tune is done in the summer when cold tires in the morning are sitting on 50 F surfaces...
In the summer you can take a cold tire out on a blacktop surface reaching temps of 140F to 150F.

This will take your tires up in the 36 to 38 psi range...

So in the sumer when you are seeing 85 and 90 degree days, you need to lower your tire pressure to a point that when you actually using the tires they are not in the 35 to 38 psi range..

I didn't check where you live,,, but tire tuning is based on where you live and how hot it gets...

The sticker on the door is generic and covers a multitude of sins..Its like a tire alignment.. ther is a + - tolerence for all the specs. but there is perfect spot...it is called the mean... a typical spec will be 3 degrees plus three, minus 2... but the perfect number is 3 degrees... same with tires. Sure they will work at 30 psi cold, but they will work better if tuned to the perfect spot.

To get the most out of your car, having the right footprint will give you the best miles per gallon and the best tire life...

Using the DIC to display mpg over a know distance tells you if your getting the most out of your car.

Its a very simple tuning trick used by real car people.."

I hope it helps you and others understand the correct tire pressure for run flats for best wear and gas milage and performance.

P.S.
I keep mine at 27 cold PSI in the summer and after driving for a while it reaches 30-31 hot PSI...and in the winter I keep it at 28 cold PSI and it reaches 30-31 hot PSI. Of course all of this is in my area...Wmbg., VA...

 

[kingman]

Great thread

Thanks, l'm going to print it and keep it in my glove compartment.

Alan