Moe tyres on my bmw f30

[Ashf30]

Is there any problems with having Bridgestone runflats moe tyres my bmw f30 ?

[Monty Python]

Nothing at all - it just means they've been tested by Mercedes and "approved". I strongly suspect Mercedes get some sort of backhander for every one sold.

[interstellar]

I switched to non run flats on my F31, much better ride and road noise is much quieter.

[Ashf30]

I do a gd few motorway miles a year can’t be arsed with the hassle tbh

[interstellar]

so do I, 17k a year. Switched all four and put a can of tyre gunk in the boot.

Only a hassle if one goes pop which it hasn't so far.

[Ashf30]

I just had 2 new runflats do you think it’s worth keeping them and getting a set of non runflats or can you run runflats with non runflats

[interstellar]

There is no proof its an issue but most people say don't mix it. If you bought two then that's where I was. I had the two rears on the legal limit and the fronts on 5mm.

I decided to bin them and go non run flat but only you can decide.

Good luck.

[jon-]

You can mix RFT with non RFT but make sure the axles are paired with the same types of tyres, and spend some time getting used to the handling while they're mixed as you're changing the damping of each end.

[Ashf30]

What difference does it make to the handling ?

[jon-]

Ashf30 said:

What difference does it make to the handling ?

You're changing sidewall stiffness and roll, how this changes the handling of the car depends on what end each tyre is on.

You're also likely to be changing the wet grip performance, so new non-runflat on the front and older runflats on the rear, you could be adding a little oversteer to the balance, especially on RWD.

None of these issues are major, people run mismatched tyres all the time. Just be mindful of what you have under you.

[Ashf30]

Would you recommend run flats on the front and non runflats on the back as I do go through tyrees on the bk a lot faster as it is rwd

[Monty Python]

Ashf30 said:

Would you recommend run flats on the front and non runflats on the back as I do go through tyrees on the bk a lot faster as it is rwd

New tyres should always go on the rear.

[jon-]

If you've got an F30 you likely don't have a choice as they run staggered sizes.

[stemll]

jon- said:

If you've got an F30 you likely don't have a choice as they run staggered sizes.

All of them? My F31 328i runs the same front and rear (yes I do know it's not an F30). Does the saloon run different tyres to the estate?

[Monty Python]

stemll said:

All of them? My F31 328i runs the same front and rear (yes I do know it's not an F30). Does the saloon run different tyres to the estate?

I think the staggered setup is an option on all models but tend to be fitted to all of the more powerful versions.

[jon-]

I stand corrected, I thought they only ran square setups on the smaller vehicles and as a winter option for ease of fitment.

[Monty Python]

jon- said:

I stand corrected, I thought they only ran square setups on the smaller vehicles and as a winter option for ease of fitment.

No - you can get a 320d with 19" staggered alloys.