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New wheels

Runflats on a car, with 40 profile, are crap and dangerous and horrible to drive on and expensive and and and…

I bet you can get a used set of wheels, and the buy some suitable tyres, and cover a lot of the cost by selling what you have leftover. The either buy a spare/spacesaver, or compressor and gunk and jack etc. Your car will feel like a great car to drive rather than a dead pig.
 
Runflats on a car, with 40 profile, are crap and dangerous and horrible to drive on and expensive and and and…

I bet you can get a used set of wheels, and the buy some suitable tyres, and cover a lot of the cost by selling what you have leftover. The either buy a spare/spacesaver, or compressor and gunk and jack etc. Your car will feel like a great car to drive rather than a dead pig.
My dad has a 2013 5 series, I've looked and there isn't space for even a spacesaver. As a result he still has RFTs. Crap design.
 
Runflats on a car, with 40 profile, are crap and dangerous and horrible to drive on and expensive and and and…

I bet you can get a used set of wheels, and the buy some suitable tyres, and cover a lot of the cost by selling what you have leftover. The either buy a spare/spacesaver, or compressor and gunk and jack etc. Your car will feel like a great car to drive rather than a dead pig.
My Giulia drives and handles superbly well on runflats.
 
My guess is it would be better on normal tyres. I accept they’ll have improved since I waved bye bye to them eight years ago, but so have normal tyres.
 
I'd stick with the 18" rims. There's no guarantee that even a 17" rim is going to negate the vagaries of the nations pot-holery.

John
 
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Tiny wheels look crap

But the bits of your spline stay connected and you don’t skitter all over the road when hitting a bad surface. MY mk2 Audi TT is on its original wheels. It’s pleasing on the eye and drives well. It could look better but I like driving it more than looking at it.
 
I'd stick with the 18" rims. There's no guarantee that even a 17" rim is going to negate the vagaries of the nations pot-holery.

John

The thicker, less flexible sidewalls of runflats absorb less of the shock of an impact with a pothole, therefore that shock is transferred to the wheel. If the car also has a firm suspension set up, the wheel will be subjected to repeated impacts with every imperfection in the road. Eventually a large impact will finish the wheel/s off.
Fitting either non-RFTs or higher profiles will help reduce that shock.
 
Current car has 18s but with 50 odd section side walls, previous car had same size wheels but with less side wall. Quite a marked difference in ride quality.
 
I have no doubt on the council thing, however, in reality my life is too short. I just need a solution to the immediate problem. I will see what local breakers have

Shame about no photos/evidence. No point in suggesting what others have, but I'd say that several mates near me have been paid out re wheel damage.

Nobodys talking about going back to 13x165s, just an end to current rubber band nonsense. Mine are 19" and 35 profile, it rides like a skateboard and I get better small-bump ride quality from my pushbike.

I think a lot of this is to do with the car itself, as well as the wheels fitted. IE the Jag i previously owned had a damaged wheel caused by a pothole, that thankfully got 'straightened'. The Volvo i drive has 20 inch rims, on run flats, and is very comfy compared to the wife's JCW Mini.
 
This is all too complicated, I think I am just going to bend over at BMW
Stop!

If you’re willing to go down that route, search for a decent aftermarket wheel and tyre specialist and have a chat. They might have some good advice and offers.

BMW dealers will take as much money from you as they can, and in my limited experience mess it up too. And probably leave you with a similar, vulnerable set up.
 
Are German roads better than ours in the U.K.? My last experience was about 35 years ago, Hook of Holland to Hamburg and back, and I thought the roads in Germany were nothing special.
 


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