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18" wheels

Posted: 16 Jan 2013, 15:06
by jocko
are there any 18" wheels that will fit on my van, or will they need adapters. Have been told this size would be best to help bring down the revs on my TDI engine, with petrol gearbox. Want to fit 245/55/18 tyres.

Re: 18" wheels

Posted: 19 Jan 2013, 08:14
by rich broom
you dont need to go 18 inch for that. just up the sidewall ratio a bit. ie 65 or something.
look for a tyre size chart

Re: 18" wheels

Posted: 19 Jan 2013, 15:31
by busbuddy
With 18s and big tyres watch the edge of the swing arm

Re: 18" wheels

Posted: 20 Jan 2013, 18:12
by jocko
So will 195/65/14 be ok and am I ok changing just rear, or all 4. Cheers

Re: 18" wheels

Posted: 21 Jan 2013, 10:39
by billy739
use this
http://www.brick-yard.co.uk/VehicleSpec ... ltwhls.htm" onclick="window.open(this.href);return false;

compare the standard 185 / 82 / 14 tyre with the one you require

you dont need to go to 18 inch to get a bigger diammeter , in fact there are many 18 inch tyres that sit lower than the 14 van tyre!

you can change just the rears no probs.

also if you google tyre speed calculator and know your gearbox code you can figure out what revs the engine will be doing in each gear at different speeds.

Re: 18" wheels

Posted: 21 Jan 2013, 12:34
by g60steve
jocko wrote: Have been told this size would be best to help bring down the revs on my TDI engine

May I suggest you don't ask the same person for anymore advice! :roll:

jocko wrote:So will 195/65/14 be ok

They're 45mm smaller than the standard tyre.

195R14C's are 21mm larger.
205/80/14C's are 30mm larger.
205/82/14C's are 38mm larger.

Re: 18" wheels

Posted: 21 Jan 2013, 13:11
by keith
if it helps i have 215 65 16s on the back of mine....tdi conversation

and 205 65 16s on the front

Re: 18" wheels

Posted: 21 Jan 2013, 14:29
by Titus A Duxass
keith wrote:if it helps i have 215 65 16s
I also have this size but all round, they are 5% larger than standard.

Perfect for my ADY conversion (seen a GPS 170 kph)

Re: 18" wheels

Posted: 21 Jan 2013, 21:20
by jocko
g60steve wrote:
jocko wrote: Have been told this size would be best to help bring down the revs on my TDI engine

May I suggest you don't ask the same person for anymore advice! :roll:

I didn't, someone posted on another forum, that they had put those size on with their TDI conversion.

Re: 18

Posted: 21 Jan 2013, 21:22
by jocko
Titus A Duxass wrote:
keith wrote:if it helps i have 215 65 16s
I also have this size but all round, they are 5% larger than standard.

Perfect for my ADY conversion (seen a GPS 170 kph)


can I ask what wheels you both are using?

Re: 18" wheels

Posted: 22 Jan 2013, 06:07
by Titus A Duxass
I'm using Merc ML wheels with 20 mm spacers/ adaptors.

Re: 18" wheels

Posted: 22 Jan 2013, 06:35
by Titus A Duxass
Here's a fred with some photos of ML wheels on T3s.
https://club8090.co.uk/forum/viewtopic.p ... =+merc+ml+

Re: 18" wheels

Posted: 22 Jan 2013, 21:50
by kevtherev
Titus A Duxass wrote:Here's a fred with some photos of ML wheels on T3s.
https://club8090.co.uk/forum/viewtopic.p ... =+merc+ml+
What a crackin thread :D
so much easier than faffing about drilling out centres and stud holes.

Re: 18" wheels

Posted: 23 Jan 2013, 12:05
by jocko
Kev, what wheels have you got those tyres on mate

Re: 18" wheels

Posted: 23 Jan 2013, 13:04
by kevtherev
Benz ML's.. :D