Mixing tyres?
- Thread starter TONYMOR
- Start date
tintoverano
Active member
TONYMOR said:
are you thinking about doing so to save money or else?
TONYMOR said:
It isn't desirable but it is certainly feasible & isn't illegal ( you wouldn't fail a MOT test ) but if the rear runflats still have lots of tread then they are worth removing to sell & put the ££ into replacing all the 4 together , a decent set of staggered 18s can be had for around £275-£350 or £350-£400 19s
Agree tyres can be mixed as mr Wilkes has said as it’s not illegal as I have done it on my old 330d but highly recommend you keep tyres the same on each axle. I even put mine through it’s mot with fronts being RFT and rears on normal tyres with no issues. There was no handling issues what so ever so don’t listen to what some individuals say.
tintoverano
Active member
SiJar said:
When I purchase my car it had run flats on the front and standard tyres on the back.
I know this is the reverse of what you are asking, but let me tell you, the experience was almost enough to make me walk away from the car. It was almost impossible to hold the car in a straight line in some roads and when braking at times I was convinced I was going to spin. It also made the traction control light come on when going around a corner slowly.
Swapped out to 4 x non run flats (Goodyear’s) and it’s like a different car.
I would strongly urge you not to mix run flats and non flats from my experience. If you do, hold on tight
I know this is the reverse of what you are asking, but let me tell you, the experience was almost enough to make me walk away from the car. It was almost impossible to hold the car in a straight line in some roads and when braking at times I was convinced I was going to spin. It also made the traction control light come on when going around a corner slowly.
Swapped out to 4 x non run flats (Goodyear’s) and it’s like a different car.
I would strongly urge you not to mix run flats and non flats from my experience. If you do, hold on tight
Because you know best!!!!tintoverano said:SiJar said:
No-one here has stated it is illegal but it is certainly bad practice as my tour of tyre fitters that refused to do it proves.
As for MOT passes, well you have seen the recent pics of my brake discs that 'passed'.
I have never seen an mot inspector read the name, make and type from each tyre on the vehicle.
It comes down to common sense, tyres and brakes are not to be toyed with or for 'trying things out'.
My imput for your research is that I have done it in the past on a e46 330 and had no problems,but the car was never pushed to a point where I found out if I had made a sensible decision or not :wink:
Would i do it again? No
It was only done as the rft had plenty of tread left and a yorkshire man wont waste good rubber
Would i do it again? No
It was only done as the rft had plenty of tread left and a yorkshire man wont waste good rubber
I have brand new standard tyres on front and Pirelli P Zero Run Flats on the back, like this when I bought the car. Never had an issue with handling, and have pushed the car pretty hard, though the ride is a little firm (understatement) especially with the m sport suspension. Will replace with normal rear tyres, but there is plenty of life left in the Pirelli's at the moment.
I think if they were the other way around it would be a different story and I would have changed them immediately.
I think if they were the other way around it would be a different story and I would have changed them immediately.
The z4 maybe a different to a 3 series but I have done it on several of my 3 series cars as I only change the tyres over from RFT to normal tyres when the tread is down to about 2 millimetres and have never experienced any handling issues whatsoever. Although I must say I have only had Goodyear RFT which are regarded as probably the best RFT on the market at the time. Oh and yes they were fitted by a quality tyre fitter with no remarks and I ran the car like that for over 12 months covering about 18k miles.
I would rather run on a proven branded set of mixed rfts and non run flat that have plenty of tread (not that i have in the z4 )than all 4 cheap ditch finder tyres on 2mm of tread,and i am guessing also that there is a few folks on here that do very little miles and are running on tyres past their best before date,just food for thought :wink:
Had runflats on the back of a z4c i bought a few years back, but had new non runflat fronts. Would unpredictably kick sideways at 30mph on roundabouts on my morning commute. Not recommended, strange that people are using something not being illegal as justification for it being ok... strange strange logic.
Think this is the only time I've been more sideways
https://www.youtube.com/watch?v=jrhcyUHolyI
Think this is the only time I've been more sideways
https://www.youtube.com/watch?v=jrhcyUHolyI
A
Anonymous
Guest
R_P_M_ said:Had runflats on the back of a z4c i bought a few years back, but had new non runflat fronts. Would unpredictably kick sideways at 30mph on roundabouts on my morning commute. Not recommended, strange that people are using something not being illegal as justification for it being ok... strange strange logic.
Think this is the only time I've been more sideways
https://www.youtube.com/watch?v=jrhcyUHolyI
Quite so...in aviation we have the concept of ‘good airmanship’, that is what is good practice, what is respectful of other people and how to behave both legally and socially..
What I see in some of these comments is a terrestrial version of a lack of good airmanship.. :thumbsdown: