Mismatching tyres?

You'll get used to any difference - well I would hope so, they may warm up at different rates so you will have to watch out on pre-RR warm up trips :p
 
As long as the sidewall stiffness and compound are relatively similar I can't envisage any mentally different effects - sure it might be noticeable but I'm sure it's not going to be life changing unless you are hanging the back end out around every corner.

Especially as the BMW's I've driven have relatively muted steering, it's not going to be as noticeable as something rawer.
 
I'm in the same predicament. Currently have CS3's all round, but the rears have about 2mm left, if that. CS3's in 265/35/19 are ~£250 each and as you said, inferior to the CS5's. I am also considering other tyre choices such as Michelin, Falken, Vredestein and Goodyear but have no idea if I should be changing all 4, as the fronts have got thousands of miles left in them.
 
My work car had its service the other week and came back with 4 brand new tyres 2 Goodyears on the left 2 Perreli's on the right, even with my very vague car knowledge I know the axe'ls don't run that way.
 
You may want to swap them round so you have 2 of the same at the front and rear, if the wheels and tyres are all the same size.
 
If you don't throw the car around you are never realistically going to notice the difference in front/rear. Only when you approach the limits and one starts to give will you notice any difference at all. (Or possibly on greasy tight roundabouts).

Really isn't an issue unless you are choosing known crap tyres on one axle (P6000's for example) and decent tyres on the other.

I have had mismatched tyres on various car's on have never had any issue that I'm aware of, that were caused by either mismatched tyres, because I never got myself into a situation that it counted (other than me being a complete tool on occasions).

Fox, it isn't an issue for you bud other than cosmetic, it will have no impact for you realistically.
 
Scougar said:
Fox, it isn't an issue for you bud other than cosmetic, it will have no impact for you realistically.
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I agree, but then there's always the what if. Black ice out of no where spins out and crashes, there will be that annoying what if factor of if only I had different tyres, if only this and if only that hadn't happened. The natural reaction to an accident
 
Scougar said:
If you don't throw the car around you are never realistically going to notice the difference in front/rear. Only when you approach the limits and one starts to give will you notice any difference at all. (Or possibly on greasy tight roundabouts).
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Not always the case, especially with BMWs, my E46 became very twitchy with different fronts and rears, both were Potenzas so not a vast difference in the tyre but it definitely was noticeable on the daily drive. I do not think the E39 is as susceptible, however it still may be noticeable enough to regret.

I would just change the back, see how it is, if it's crap then get the front to match - if you think the cost of wasting good front tyres is worth changing to a newer/better make of tyre.
 

Get these tyres because this advert owns on so many levels (dramatic music, WOMAN, panicked looks, signs, traffic, brake lights oh dear lord!!), then tell your gf you are happy for her to drive the car, then show her the advert as to why.

If she finds it funny, marry her.

If I were a tyre company I would unironically make that advert again, the fuss alone would bring in enough advertisement.
 
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That advert is epic, I must buy more Goodyear tyres at once!

I currently have Goodyear AS1 all round, my rears are running low and will soon need replacing but the front aren't even half worn. I too want to try the AS2 but also hate not having all 4 matching. Think I will have to compromise this time, don't want the expense of 4 new tyres.

At least having newer better tyres on the rear is better than trying to put them on the front.
 
...Still in one piece with two bridgestones on the front and one continental and a dunlop on the back. Not RWD though :)
 
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