[Mythos]

I have an M package on my 328, so the rear tires are wider than the fronts. These are the original tires and I plan to switch to standard tires (PSS) when I need to replace them.

It seems like the front are going to be needing replacement before the rears.

Is there anything funky about switching two at a time, as opposed to doing all four tires at the same time?

Anyone offer any help on this matter?

(thanks)

[maddmatth]

Yea it'll make for some funky handling, front of the car will be made softer relative to the front.
Suggest you replace them all then sell the used rears, someone will be happy to get some cheap used tyres and you'll get some cash back.

[BruceJ]

Originally Posted by maddmatth

Yea it'll make for some funky handling, front of the car will be made softer relative to the front.
Suggest you replace them all then sell the used rears, someone will be happy to get some cheap used tyres and you'll get some cash back.

Done it in my former Z4Si. no issues and car ran the Dragon(big twisties) that way.

[ATLIEN]

I replaced the backs with MPSS and the fronts still had run flats and the car felt pretty weird. I went back and had MPSS put on the fronts plus and alignment and all was well. MPSS made the car feel much more composed but to be honest the RFT were stiffer and took a line better in the curves IMHO.

[jt335i]

There’s no written rule that says you have to replace all 4 tires at the same time and can’t replace just the fronts or just rears. If you replace just the fronts first, you may notice a difference in ride and handling. However, it’s always advised to replace all 4, because the rear tires provide stability, and without stability, steering or braking, especially on a wet or even damp surfaces might cause a spin out. If you have new tires up front, they will easily disperse water while the half-worn rears will go surfing: The water will literally lift the worn rear tires off the road. If you're in a slight corner or on a crowned road, the car will spin out so fast you won't be able to say, "Oh, s***!"

When I replaced the OEM RFTs with Michelin PSSs on my 335 3 years ago, the ride and handling felt so much better. I am now on my second set of PSSs and couldn't be happier.

[max_330i]

I see you're in SoCal, so I would probably just wait and replace all four. If you were in Chicago like me, it would be troublesome to run the tread too low on the tires, but I don't think you're seeing snow any time soon

As others have said, you could just replace two at a time, but the outcome will be strange ride and handling for a little while. It's not the worst thing in the world, but probably better to avoid it if you have the choice

[Tom K.]

The traction and handling difference between significantly different front & rear tires could result in very unexpected behavior in an emergency situation (especially on wet pavement) - possibly leading to a serious accident.

Tom

[max_330i]

Originally Posted by Tom K.

The traction and handling difference between significantly different front & rear tires could result in very unexpected behavior in an emergency situation (especially on wet pavement) - possibly leading to a serious accident.

Tom

A slightly more pessimistic view, but yes, this is what I was getting at. Well said.

[Tom K.]

Originally Posted by max_330i

A slightly more pessimistic view, but yes, this is what I was getting at. Well said.

Thanks. As a resident olde farte, I remember when radials were being introduced in the US back in the late 1960's. Some folks mounted them only on one axle to save money, often with very bad results.

Tom

[Mythos]

BIG THANKS EVERYONE,

Yeah, I'll just do all four...

[Mythos]

BIG THANKS EVERYONE,

Yeah, I'll just do all four...