Larger tyres on 18s?

Post by **anaconda** » 20 Jun 2015, 17:44

Brought our T25 home yesterday, driving from Derby to Merseyside. Great to be driving a T25 again but a very hard ride.

I'd like to keep the 18 inch alloys which are currently on 225/40/18 with spacers. Lowered 50 (I think) Could someone please tell me if it's possible to get larger tyres on the 18s, if so what size are people using? I'm not too concerned re the effects on speedo and a larger diameter should reduce revs a bit...1.9D 1Y engine.

Many thanks in advance

Post by **jasd1978** » 20 Jun 2015, 21:46

I have 225/45/18's on. Van is lowered 50mm on avo springs.

Post by **anaconda** » 25 Jun 2015, 20:43

Thanks, it's good to know I can squeeze a bit of extra wheel width without any other adjustments.

Post by **danveall** » 25 Jun 2015, 20:48

235/45 on mine but not lowered. Nice ride.

Post by **anaconda** » 26 Jun 2015, 07:12

235/45.....I'm assuming 14 or 15 wheels??

Post by **danveall** » 26 Jun 2015, 16:57

No 18's. Slightly oversize but not effected the drive ability.

Post by **anaconda** » 26 Jun 2015, 21:17

Nice one! let's have a pic if you've got one.

I put 225/45/18 s on the rear today. If I can squeeze something larger yet on the rear I may transfer these to the front.

Post by **danveall** » 27 Jun 2015, 07:21

No problem

Post by **R0B** » 27 Jun 2015, 08:48

Are these 18" tyres load rated high enough for these vans?

Post by **silverbullet** » 27 Jun 2015, 09:01

FWIW, I have XL rated 215/50 and 245/45 on 17" on a tintop, 95 and 97 rated but its basically a 5-seat car with curtains.
95 load rating is the absolute minimum but leaves no room for error.

Post by **danveall** » 27 Jun 2015, 14:29

Mine are rated to 98 which I believe are rated high enough.
Wouldn't go any lower for a camper though.

Post by **busbuddy** » 28 Jun 2015, 10:46

bearing in mind what my vehicle is

I had 245/45s on the back which suited the jx engine quite well, then I went tdi so put 255/55s on

I was running a standard 3H box with a 25mm adapter on the rear, because I don't have the rear wheelarch problems you guys have the major problem for me was the welded seam on the swing arm.
If I had fitted 255/60s then the seam would have needed work to clear the tyre

on the idea of reducing revs with bigger tyres beware of going too far, it is all too easy to find yourself 'in-between' gears where you are continually up down up down with the gears as the engine drops in and out of its torque band

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Larger tyres on 18s?

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