Yet another RFT Thread
Discussion
My Z4 has 4-5mm of tread left all round on the OEM runflats (18"), but I really want shot of them.
Are Falken's still the good budget choice and Conti Sport Contact/Pirelli P0's a premium pick?
Please tell me there will be a massive difference in the harshness of the ride and tram-lining?
Are Falken's still the good budget choice and Conti Sport Contact/Pirelli P0's a premium pick?
Please tell me there will be a massive difference in the harshness of the ride and tram-lining?
I don't agree with that at all, the difference between the run flats and a decent proper tyre is massive on the Z4.
It completely stops those harsh crashes over raised ironworks and potholes, and it stops the back end skipping out on anything but billiard table smooth roads, also depends on how old your car is of course, if it is 6 years old with 60k miles or more on it the chances are the shocks and bushes are almost shot as well, so a change of tyres may not make as much difference.
But swapping to proper tyres on a 6 month old 3.0i Z4 was a revelation.
It completely stops those harsh crashes over raised ironworks and potholes, and it stops the back end skipping out on anything but billiard table smooth roads, also depends on how old your car is of course, if it is 6 years old with 60k miles or more on it the chances are the shocks and bushes are almost shot as well, so a change of tyres may not make as much difference.
But swapping to proper tyres on a 6 month old 3.0i Z4 was a revelation.
gizlaroc said:
I don't agree with that at all, the difference between the run flats and a decent proper tyre is massive on the Z4.
It completely stops those harsh crashes over raised ironworks and potholes, and it stops the back end skipping out on anything but billiard table smooth roads, also depends on how old your car is of course, if it is 6 years old with 60k miles or more on it the chances are the shocks and bushes are almost shot as well, so a change of tyres may not make as much difference.
But swapping to proper tyres on a 6 month old 3.0i Z4 was a revelation.
Mines an E89 with <30k on the clock, hopefully my bushes aren't totally knackered just yet. Did you go for Michelin or you've tried them all? Are you on 18" or 19" tyres?It completely stops those harsh crashes over raised ironworks and potholes, and it stops the back end skipping out on anything but billiard table smooth roads, also depends on how old your car is of course, if it is 6 years old with 60k miles or more on it the chances are the shocks and bushes are almost shot as well, so a change of tyres may not make as much difference.
But swapping to proper tyres on a 6 month old 3.0i Z4 was a revelation.
marting said:
Mines an E89 with <30k on the clock, hopefully my bushes aren't totally knackered just yet. Did you go for Michelin or you've tried them all? Are you on 18" or 19" tyres?
It was on a friends car, he was going to chop it in as it was so harsh, but I made him buy some PS2s, and he then loved it. I had been through it already on loads of BMWs, all so much better when off the tyres.
REALIST123 said:
I think it's more to do with which suspension you have. Never had any problem with crashing, tramlining or anything else with our 08 SE. The sports suspension is much stiffer.
I think the SE suspesnion hides the crap run flats well, but get the Z on M-sport suspension with proper tyres and it is a better drive. The sport shocks and springs are Bilstein and Eibach, the SE is a cheap Boge/Sachs twin tube set up, the sport actually soaks up poor UK roads better, but not on run flat tyres.
I went from RFT's on my 130 M Sport to Michelin PS3's all round and the improvement was dramatic...as in awful to tolerable... but it was still a crashy ride.
Oddly, on my JCW, I have now got SP01 RFT's all round (my wife drives it a lot and prefers the security of the RFTs) and there is a marked improvement over the original mix that was on it when I bought it. Still crashy, obviously, but is, again, tolerable for a roller skate car.
Oddly, on my JCW, I have now got SP01 RFT's all round (my wife drives it a lot and prefers the security of the RFTs) and there is a marked improvement over the original mix that was on it when I bought it. Still crashy, obviously, but is, again, tolerable for a roller skate car.
marting said:
Mines an E89 with <30k on the clock, hopefully my bushes aren't totally knackered just yet. Did you go for Michelin or you've tried them all? Are you on 18" or 19" tyres?
We've an e89 35i m-sport on 19' and currently running p-zero asym 2 and they're very nice. Not sure what's going on though with the car as I've bottomed it out twice recently! Falken FK 452 was a popular choice, particularly on the 1-series. I have heard the replacement tyre is not as well regarded, but I have no experience of it. I have Goodyear non-RFT on the back of my 1-series M-Sport Coupe, Falken 452 on the front. Like the vast majority of people switching from RFT tyres, I would not go back to runflats. Ride, wear, noise, grip are all better.
Even more of a waste of time than summer RFT tyres are the winter runflats; how it can be a good idea to sell tyres that have so much metal in them they never warm up properly for use below 7C is beyond me!
Even more of a waste of time than summer RFT tyres are the winter runflats; how it can be a good idea to sell tyres that have so much metal in them they never warm up properly for use below 7C is beyond me!
I stand corrected. You are right ... The tyre compound used for winter tyres makes them softer at low temperature, so they don't need to get warm to grip.
It's also the case that the stiffer sidewall in RFT tyres doesn't make much difference to the overall softness (and therefore grip) when it comes to winter tyres.
That being said, I'd still never buy a winter RFT!
It's also the case that the stiffer sidewall in RFT tyres doesn't make much difference to the overall softness (and therefore grip) when it comes to winter tyres.
That being said, I'd still never buy a winter RFT!
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