mixing tyres

mejinks · 27 Oct 2009 at 16:35

I know its meant to be bad practice, but i need to change two rear tyres and I don't fancy paying 600 quid for 2 runflats. Can I just put some avons on the back while keeping the dunlops on the front?

peterattheboro · 27 Oct 2009 at 16:38

Should be fine imo.

Problems start to arise when there are different tyres on the same axel.

jamoor · 27 Oct 2009 at 16:39

mejinks said:
I know its meant to be bad practice, but i need to change two rear tyres and I don't fancy paying 600 quid for 2 runflats. Can I just put some avons on the back while keeping the dunlops on the front?

Why not just switch to normal tyres all round?

Also get some good branded ones on the rear.

Lord-Jaffa · 27 Oct 2009 at 16:48

Depends entirely what you drive, if its some 1.6 focus then I wouldnt worry about it!

[TW]Fox · 27 Oct 2009 at 17:17

Do not mix runflats and conventional tyres.

Clarkey · 27 Oct 2009 at 17:40

[TW]Fox;15187644 said:
Do not mix runflats and conventional tyres.

Why not? What makes it any different to running any other 2 different types of tyre on the front and rear? Genuine question, I can't think of a good reason.

[TW]Fox · 27 Oct 2009 at 17:41

Because they have very different construction properties.

mejinks · 27 Oct 2009 at 18:22

[TW]Fox;15187644 said:
Do not mix runflats and conventional tyres.

No, I was thinking of staying with runflats all around, but having avons on the rear instead of Dunlops.

Biohazard · 27 Oct 2009 at 18:25

you can do that yeah

[TW]Fox · 27 Oct 2009 at 18:30

mejinks said:
No, I was thinking of staying with runflats all around, but having avons on the rear instead of Dunlops.

Oh yea thats fine but why not just take this opportunity to get 4 decent non-runflats?

Biohazard · 27 Oct 2009 at 18:31

he mentioned cost already.. don't know the difference between either if I'm honest though.

mejinks · 27 Oct 2009 at 18:44

[TW]Fox;15188280 said:
Oh yea thats fine but why not just take this opportunity to get 4 decent non-runflats?

There is that, but do non runflats last longer? I know its supposed to be a more comfortable ride with non run flats, but what are the better tyres to fit? I have a funny size (18s) with 275 at the back and 245 at the front.

[TW]Fox · 27 Oct 2009 at 18:54

I see no reason why non RFT's would last longer.

miniyazz · 27 Oct 2009 at 19:40

Plus runflats can't have a puncture repaired IIRC, making them potentially more expensive should you get a (slow) puncture in the future.. is there really a positive reason for runflats over non-runflats, apart from not needing to carry a spare wheel/change one at the side of the road?

mejinks · 27 Oct 2009 at 19:40

[TW]Fox;15188485 said:
I see no reason why non RFT's would last longer.

I mean do rft tyres last longer because they are made of harder material? Genuinely interested.

Also, which tyre supplier? Currently, Kwik Fit have the SP01 run flats for £351 for both online, as loathe as I am to go there lol.

ShiWarrior · 27 Oct 2009 at 21:25

Camskill seem to always be the cheapest, have a look ther mate

goneawol · 27 Oct 2009 at 21:34

ShiWarrior said:
Camskill seem to always be the cheapest, have a look ther mate

also Blackcircles

Dandle · 27 Oct 2009 at 21:52

miniyazz said:
Plus runflats can't have a puncture repaired IIRC, making them potentially more expensive should you get a (slow) puncture in the future.. is there really a positive reason for runflats over non-runflats, apart from not needing to carry a spare wheel/change one at the side of the road?

They can as long as its on the main tyre tread and not on the sidewall. They should also not have driven far and so the structure of the tyre isnt compromised. Not all places will repair them but a lot will these days.

mjt · 27 Oct 2009 at 22:01

[TW]Fox;15188485 said:
I see no reason why non RFT's would last longer.

i think runflats last longer, we just changed ours on the 5 a few months ago after 3.5 years and 30,000 miles.
but then it only really ever does motorway miles

[TW]Fox · 27 Oct 2009 at 22:07

mjt said:
i think runflats last longer, we just changed ours on the 5 a few months ago after 3.5 years and 30,000 miles.
but then it only really ever does motorway miles

When comparing the runflat and non runflat variant of the same tyre I see no reason why they would last longer. 5's came out of the factory on touring tyres not sports tyres so even before runflats you'd get pretty good mileage out of them.