20in tyres or 18in ? If so why?

tacaloo

New Member
I’m thinking of switching from 20 inch to 18 inch as and raising the suspension as well because I’m not happy with the way my tires are performing. What are your options and why? Many thanks.
 
If you run a more premium tyre at a more suitable width and size for the Transporter’s steering, 20” are fine. My van originally came with 275/40r20 tyres that, although new, were cheap, hard, and heavy. I invested in changing out the suspension for a coil over setup and realised that 275 width tyres on the front steering axle rub when lowered. As the overall diameter of the tyres looked good and filled the arch, I wanted a tyre with the same diameter, but narrower. Receiving good advice on here and other places, I swapped all four for some Goodyear F1 Eagal Asymmetric F1’s at a 103 weight rating and a size of 245/45r20.

The improvement was like night and day. The steering is more precise, I now don’t have any rubbing, and the overall look, because of the diameter being the same as the old tyres, looks great. Turned out my alloys were 8.5J wide and running 275/40r20 tyres on a rim only 8.5J, is not recommend, despite most conversion companies doing exactly that.

My vote is 20”, but with the correct tyres. 👍
 
For info ('cos I'm thinking of doing the same) I'm also on Goodyear Eagle Asymmetrics, 265/40/20. Lowered 60mm on Bognor Motors Bilstein coilovers.

Wheels are 8.5j front 10j rear and it's a 4Motion.

The staggered fitment bothers me a little (rears are a little stretched, fronts a bit bulbous) though ride and handling is very good.

Just looking for a bit more tyre sidewall (and lose the staggered setup) for a bit more compliance over rough roads really.
 
If you run a more premium tyre at a more suitable width and size for the Transporter’s steering, 20” are fine. My van originally came with 275/40r20 tyres that, although new, were cheap, hard, and heavy. I invested in changing out the suspension for a coil over setup and realised that 275 width tyres on the front steering axle rub when lowered. As the overall diameter of the tyres looked good and filled the arch, I wanted a tyre with the same diameter, but narrower. Receiving good advice on here and other places, I swapped all four for some Goodyear F1 Eagal Asymmetric F1’s at a 103 weight rating and a size of 245/45r20.

The improvement was like night and day. The steering is more precise, I now don’t have any rubbing, and the overall look, because of the diameter being the same as the old tyres, looks great. Turned out my alloys were 8.5J wide and running 275/40r20 tyres on a rim only 8.5J, is not recommend, despite most conversion companies doing exactly that.

My vote is 20”, but with the correct tyres. 👍
Thank you for your reply. Can I ask what psi you run at?
 
18s for me.

Im no boy racer, and its a van FFS so trying to make them look sporty or the like always fails in my eyes. My shirt is tucked in , my baseball cap is on the right way round, and the crotch of my jeans isnt at my knees, so Id look an even bigger bellend than I normally do with Max Power wheels and suspension.

18s are less expensive, lighter overall (rubber is less dense than steel or alloy), greater choice of boots, more pothole resistant, potentially (dependent on exact sizes being compared) a greater volume of air so ride comfort benefits, less attractive to villains, and less obvious to any dibble that might be looking for vehicle to crawl ofrrmin the hope of finding somethjng amiss.

But despite all that plenty of chaps like 20s, and fair play to them if thats their bag.
 
I’m on 245/40s (Nankang) lowered on MTS coilovers and its drives like a dream. Had a go in a fully converted van on 275/40s lowered on just springs and it was awful.

Was just looking at those coilovers. Interesting that they come with eibach springs.

Any pics?
 
18s for me.

Im no boy racer, and its a van FFS so trying to make them look sporty or the like always fails in my eyes. My shirt is tucked in , my baseball cap is on the right way round, and the crotch of my jeans isnt at my knees, so Id look an even bigger bellend than I normally do with Max Power wheels and suspension.

18s are less expensive, lighter overall (rubber is less dense than steel or alloy), greater choice of boots, more pothole resistant, potentially (dependent on exact sizes being compared) a greater volume of air so ride comfort benefits, less attractive to villains, and less obvious to any dibble that might be looking for vehicle to crawl ofrrmin the hope of finding somethjng amiss.

But despite all that plenty of chaps like 20s, and fair play to them if thats their bag.
Can't argue with that!
 
Inspired by this thread, I've created a handy survey to help pick a wheel size.

 
I’m thinking of switching from 20 inch to 18 inch as and raising the suspension as well because I’m not happy with the way my tires are performing. What are your options and why? Many thanks.
Your back/arse/wallet will thank you.
 
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