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View Full Version : Tyre Help - Urgent 295/40/21, Can I use them



milesg
04-09-2012, 08:02 PM
Evening all. Got 21's on my new Q7. Tyres were pretty worn and picked up from a friend a set of 21" new Continental CrossContact UHP's for 800 (cost).

I ordered 295/35/21's but got 295/40/21's so 5% higher sidewall.

As he has done me a favour and got me these cheaply can I use them or do I need to find someone to swap or sell them?

Appreciate 5% is not much and it will slightly alter the speedo, apart from a little bit of roll what would be the issues with fitting these?

They have LOADS of clearance in the arches, the speed rating etc are bob on, I have used these on a RRS and RR Vogue and like them.

I need to know if I have to go back to him and see if he can swap (and face embarrassment) or simply fit and expect a slightly softer ride.

Thank Q

milesg
04-09-2012, 08:26 PM
forget it - just pulled the tyres from the boot, when standing the wheel up against the arch I think it might be too big.

Cheers.

Persuader
26-02-2013, 10:47 AM
forget it - just pulled the tyres from the boot, when standing the wheel up against the arch I think it might be too big.

Cheers.

295/40 21 will be fine.
many use 275/45 20 which are slightly taller still.

When you held against wheel you probably wasn't taking into account natural compression from weight of car.

Sorry reply is so late.

neilos100
26-02-2013, 10:59 AM
I would beg to differ......sure the 295 40s will fit but as the OP says they are way more than the recommended 2.5% maximum difference in diameter. As to the 275 45 20s, well they are actually smaller than the 295 40 21 not larger. Don't do it.

Persuader
26-02-2013, 12:21 PM
I would beg to differ......sure the 295 40s will fit but as the OP says they are way more than the recommended 2.5% maximum difference in diameter. As to the 275 45 20s, well they are actually smaller than the 295 40 21 not larger. Don't do it.

I'm sorry I meant many use 295/45 20 (instead of 275/45 20) and they are fine with absolutely no rubbing.

Also many many people put 22" on Range Rover Sports with 285/35 22 tyres and this set up is 4.3% bigger.

The 295/40 21 size is only 1.7% larger than the standard 275/45 20 and the recommended 295/35 21 is 2.2% less than the standard 275/45 20.

Eshrules
26-02-2013, 12:31 PM
I'm guessing the OP's managed to resolve his urgent query :D

NickPicks
26-02-2013, 12:55 PM
I'm guessing the OP's managed to resolve his urgent query :D

If they fitted, they're probably worn out by now.

neilos100
26-02-2013, 04:26 PM
Haha...didn't notice. From September last year. :banghead:

Sent from my phone...

Eshrules
26-02-2013, 07:42 PM
Haha...didn't notice. From September last year. :banghead:

Sent from my phone...

We'll let you off, in fairness to you it wasn't you that necrobumped it;-)

Sent from my Nexus 7 using Tapatalk 2