Mismatching tyres?

DRZ said:
Have you crashed and died with the CS3 on? Have you ever come close to the limits of adhesion? Why was that tire fine enough to pass your hyper-anal criteria last time around but not now? Do you constantly yearn for a few inches less stopping distance with the CS3?
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This pretty much. Do you drive your (old) car to the limit so much that you'd notice the difference?
 
DRZ said:
It just isn't that simple. Different compounds behave differently up to and beyond the limits of adhesion. You also get differences in water clearing ability and stuff like that. Sidewall stiffness etc makes a huge difference (you only have to look at RFT to non-RFT to see the most extreme examples of that) and that does tend to vary a lot between tyres.

Having said that, the difference is going to be slight but that isn't to say that it isn't there and can't be felt day to day.
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agreed - I was simplifying slightly by just talking about grip, probably should have used 'characteristics' or something similar ;)

DRZ said:
Have you crashed and died with the CS3 on? Have you ever come close to the limits of adhesion? Why was that tire fine enough to pass your hyper-anal criteria last time around but not now? Do you constantly yearn for a few inches less stopping distance with the CS3?
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What did you have on during the famous badger incident ;)
 
Gayjin said:
This pretty much. Do you drive your (old) car to the limit so much that you'd notice the difference?
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Did you not bother to read my reply to that?

Its completely irrelevent because the F1A2 is actually cheaper (by 50p, but cheaper it remains). Therefore if there is no issue with mixing front to back then it would be illogical to buy the CS3? Why would you buy the inferior tyre unless there was a reason - ie, mixing is bad - a reason I sought to clarify hence thread :)
 
I had F1 Eagles on the front of my E46 and Bridgestones on the rear, it drove fine and never felt weird or anything.

I would put Eagle F1A2 on the rear and then on the front when needed.
 
[TW]Fox;19794935 said:
There is always the option of simply going for a full set of F1 Assymetric 2's. However this is £700 fitted and requires throwing away two perfectly good CS3's with several more years life left in them which seems like a massive waste of money. Interestingly due to some sort of special offer a full set of Vredstien Ultra Sessenta is just £504 delivered from Camskill...
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I did this when i needed two front Bridgestones and there were none avaliable. Bought a new set of Sport Contact 3's and sold the remaining 1 rear tyre (other one was punctured) on ebay for £80. Helped keep everything equal as i know the E46 would have thrown a hissy fit if i had had Conti's on the front and Bridgestones on the rear.

I would go for the brand new set, and sell the two front Continentals on Ebay and get some money back.
 
Housey said:
Hang on, so behind the curve here, I thought you had a 335i now? Take 2 cars into the shower?
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He won some money on the lottery and decided to keep them both. He's also making a special garage just for his E39. How did you not hear about this?
 
I have a 330ci

Currently it has two new Vredestein Ultrac Sessanta on the rear and almost time to change Bridgestone RE50A's on the front. The car is definatly more 'twitchy'
 
I suspect that the problems with front/back mismatching will only really be an issue if you put crappy Linglongs on one axle and Eagle F1s on the other.

You are looking to leave good grippy tyres on the front axle and put good grippy tyres on the back axle. Unless you are pushing your car to the limits of it's grip (and you come across as a careful driver, Fox, so I doubt this is the case) you are unlikely to notice much difference.


FWIW I have mismatched tyres on my Mondeo, got crappy eco tyres on the rear, which are nearing the end of their life and new Dunlop SP Sport 01 on the front and on this does make a noticeable difference, but only if I'm driving the car hard and throw it into a corner sometimes the back end will come loose while the front is still gripping which I find hilarious in a Mondeo. When I'm driving sensibly it makes no difference.

Yes I'm aware that this is an FWD car we're talking about and that the BMW is RWD.


Go with the Eagle F1s. If you don't like how it handles, then consider buying two more Eagle F1s.
 
ruffneck said:
I have a 330ci

Currently it has two new Vredestein Ultrac Sessanta on the rear and almost time to change Bridgestone RE50A's on the front. The car is definatly more 'twitchy'
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This is where my concern had come from. I've seen numerous reports of issues with mismatched tyres on E46's but none with E39's..
 
[TW]Fox;19795952 said:
This is where my concern had come from. I've seen numerous reports of issues with mismatched tyres on E46's but none with E39's..
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The BMW guy said that the E39's don't suffer as much and he thinks this is because of the additional ~100kg weight they have.
 
Option 1, or bin the fronts and get what you want.

I was in this situation with my M3, and ended up getting 2 rear Vreds to match the fronts. I am doing my best to kill off all four but it's taking a while. They will be replaced by Michelin PS2/PSSS.

I had mismatched tyres front to back on my 330d on two occasions and the handling does go a bit awry. You wouldn't get the benefits of the CS5 with them on the back and CS3s on the front.
 
Hi Fox, You might remember my post around xmas time when I put some Continentals on the rear of the E60 and some Vred Sessantas remained at the front. The car was very very sketchy and sometimes unpredictable. The back would twitch and the TC was kicking in overtime on corners, especially when wet / greasy.

However, they are fine now they've got a lot of wear on them
 
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