I currently have PZero neros on my 05 MCS. I have a bad tire an need to replace the 2 fronts. I am thinking of going back to runflats for piece of mind.

Is it bad to run run flats on one axle and regulars on the other?

 

You'll run into problems with different tread patterns. Un-even wear and unpredictable handling are a just a few of the ones that come to mind.

 

It is generally not recommended.

If you chose to do it make sure that you put the best/newest tires on the back. This will help to minimize the chance of sudden, uncontrollable, oversteer during emergency maneuvers.

If you elect to replace all four tires at once then I would highly recommend establishing a tire rotation program. Although the dealers and the onwers manual do not recommend rotating the tires it is the best way to achieve maximum tread life. Also monitoring tire pressures and tread wear and adjusting the pressures to maintain even tread wear are good things to do. I rotate my tires every 3,000 - 5,000 miles and check the tire pressures every other week, especially if there is a large temperature change. For each 10 degree temperature change there will be a corresponding 1 psi difference.

I am running non-runflat BF Goodrich Traction T/A V-rated 205/50-16s with 34 psi in front and 28psi in the rear. When I was running runflat Dunlop 195/55-16s I was using the same pressures and managed to get 24,000 out of the first set and 23,000 out of the second. This included several Auto-X days on each set.

Good luck. Hope this is helpful.

 

I always run 36psi in the front, and 34psi in the rear. I check the pressure every week.

I've had 3 sets of tires on my car, I'm on the 4th. Average tire life for me is about 12,000 miles. The tires were spent after this.

 

IMO running 2 runflats & 2 non-runflats on the same car is not a good idea & possibly dangerous. The handling of those different tires is going to be very different from each other.

If you want runflats, bite the bullet & buy 4. There are many good deals to be found on runflats here in the marketplace forum.

 

if you go slow you're fine...but not recommended for any
sporty driving. thus you should just sell the car and get a used saturn.

 

I just drove 2500 miles on my WV NB with 3 different tires on it! Take it easy and you will be ok till you can buy new ones.

 

+1
Different tread designs, not a good idea.
Different tire construction, bad idea.

Look around - you're likely to be able to buy a new set of take offs for the price of new runflats, installed.

 

i can almost guarantee you that majority of the cars driven by
non-car enthusiats are running mixed tires.

 

It is true to put your best tires on the back solely for the lower risk of having a rear blowout, which makes handling much more uncontrolable than a front blowout. Run equal tires on the front, of same manufacturer and wear amount, so you don't have a problem with different diameters. Especially if you have a LSD (limited slip differential). If you have any tires running at or below the DOT safety bars, just change them all.

 

typically we use better tires in the rear to prevent spin outs.