Mixing runflats with non runflats?

jamesgarbett · Post by **jamesgarbett** » Tue Jan 03, 2023 5:57 pm

Thoughts or experiences of this?

Eventually I want to switch to non runflats but cant bear the thought or cost of binning 4 perfectly good runflats

However one rear tyre is soon on the way out

Do people mix runflats and non on the same axle or is that a bad idea?

I could just about stomach replacing both rears but not all 4 tyres at once

Nick W · Post by **Nick W** » Tue Jan 03, 2023 6:26 pm

Never mix different types of tyre,it will play havoc with handling. Change them all at the same time and discover how good your car feels. Don't forget some type of puncture repair kit and pump might now come in handy.

B21 · Post by **B21** » Tue Jan 03, 2023 6:40 pm

You can never mix different designs on one axle, and the mixture of run flats and non runflats on different axles is prohibited in some countrires, which kind of points to it being a bad idea.

So its a no!

Jasonn · Post by **Jasonn** » Tue Jan 03, 2023 8:40 pm

I had 2 new run flats fitted when I bought the car when I noticed that the rears weren't looking too clever so binned all 4 (the new one did around 2-3k.

If you're worried about cost, look out for deals from black circles, print it out then go to one of those chains that will match anyone's price (I did that with F1 autocentres and used a few vouchers to bring the price down a bit more).

You can possibly sell the "good" run flats on fleabay - although personally I'd never buy second hand tyres again (don't ask me why but michellin pilots at a "good price" resulted in a blow out and brown trousers)

Busterboo · Post by **Busterboo** » Wed Jan 04, 2023 9:54 am

jamesgarbett wrote: ↑Tue Jan 03, 2023 5:57 pm ... cant bear the thought or cost of binning 4 perfectly good runflats

However one rear tyre is soon on the way out

To begin with, that's only 3 tyres. And, being runflats, they're not "perfectly good".

So, do what Jasonn says. 'Proper' tyres will make your whole car better and you'll thank him for it.

enuff_zed · Post by **enuff_zed** » Wed Jan 04, 2023 10:06 am

Just for giggles, fit non runflats on the rear only.
I'll guarantee you'll quickly be going back to get the fronts done.

(Or possibly just quickly going backwards

)

sars · Post by **sars** » Wed Jan 04, 2023 11:50 am

It's all just hokum, Ideally you want the same make, model and size that your car was delivered with, that's what the car was developed with, anything else will give a slightly different driving experience, which may be better or worse in what is important to you.

Just make make sure you have the same make, model and size on each axle, obviously a different a tread pattern, size, compound or internal structure will give differing levels of grip, breaking efficiency, cornering ability, comfort and noise levels. In extremis, this could lead to an unpredictable driving experience especially when fitted on the same axle.

I don't understand why people put completely different sizes on their car and then state you can't put run flats on the front and normal tyres on the rear, changing make or model or size will alter your cars handling as will having extra load tyres or run flats

brillomaster · Post by **brillomaster** » Wed Jan 04, 2023 12:16 pm

i keep writing and rewriting a reply, but in short, i'm with sars. dont mix across the same axle, but happy to mix front to rear, as long as you are aware of the limitations. the main difference with run flats is a super stiff sidewall, which leads to a harsh ride and more tendency to tramline.

Scubaregs · Post by **Scubaregs** » Wed Jan 04, 2023 12:55 pm

If it's not against the law it's personal choice. Personally I would not mix run flats on an axle with non run flats on the other.

Nanu · Post by **Nanu** » Wed Jan 04, 2023 2:40 pm

Scubaregs wrote: ↑Wed Jan 04, 2023 12:55 pm If it's not against the law it's personal choice. Personally I would not mix run flats on an axle with non run flats on the other.

not illegal just plain stupid.

Nictrix · Post by **Nictrix** » Wed Jan 04, 2023 2:43 pm

I know its not a cheap thing to do but if you want to get the best out of your car a matching set of tyres is a good start.
In the past I have twice used either cheap tyres or mismatched tyres and have regretted it and will hopefully never do it again.

Scubaregs · Post by **Scubaregs** » Wed Jan 04, 2023 3:12 pm

Nanu wrote: ↑Wed Jan 04, 2023 2:40 pm
Scubaregs wrote: ↑Wed Jan 04, 2023 12:55 pm If it's not against the law it's personal choice. Personally I would not mix run flats on an axle with non run flats on the other.
not illegal just plain stupid.

Unfortunately we cannot make stupidity illegal.

Argyll Andy · Post by **Argyll Andy** » Wed Jan 04, 2023 4:15 pm

Scubaregs wrote: ↑Wed Jan 04, 2023 3:12 pm
Nanu wrote: ↑Wed Jan 04, 2023 2:40 pm
Scubaregs wrote: ↑Wed Jan 04, 2023 12:55 pm If it's not against the law it's personal choice. Personally I would not mix run flats on an axle with non run flats on the other.
not illegal just plain stupid.
Unfortunately we cannot make stupidity illegal.

Otherwise Paisley would be empty and Barlinnie bursting at the seams

Oh and Happy New Year to you and Lynn

sars · Post by **sars** » Wed Jan 04, 2023 5:07 pm

Nanu wrote: ↑Wed Jan 04, 2023 2:40 pm
Scubaregs wrote: ↑Wed Jan 04, 2023 12:55 pm If it's not against the law it's personal choice. Personally I would not mix run flats on an axle with non run flats on the other.
not illegal just plain stupid.

Is that a rational thought out response or just a gut feeling? For me it is exactly the same as increasing the tyre width or profile from a standard specification and so many on here are happy to do it.

enuff_zed · Post by **enuff_zed** » Wed Jan 04, 2023 5:17 pm

sars, for me the whole issue with runflats is a 'seat of the pants' feeling.
I would suggest that possibly your pants are a lot smaller than mine and can't detect such small changes.

Right! That's it! No more inferred compliments until 2024.

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