DEFENDER2.NET - View topic - Tyre sizes for 110 and Gearing issues?

↓ Advertise on Defender2 ↓

Home · FAQ · New Posts · My Posts · PMs · Search · Members · Map · Calendar · Profile · Donate · Register · Log In

Home > Technical > Tyre sizes for 110 and Gearing issues?

Page 1 of 1

Print this entire topic ·

RRUK
Site Supporter

Member Since: 31 Mar 2010
Location: Leicestershire
Posts: 2025

Tyre sizes for 110 and Gearing issues?

The 110 comes with 750x16 as standard, and of course hardly anyone keeps these on, and most enthusiasts cars are on modulars/boosts etc with larger more aggressive looking tyres.

So, which sizes are OK for the 110 so as to not upset the gearing and the speedo?

I am going to guess that...

235/85/16 might change the gearing slightly but not very noticeable

265/75/16 and 285/75/16 are the same gearing as 750s

The sizes I don't understand are those such as 31.10.50x15 etc but as these are 15" I wouldn't consider them anyway.

When I get my Defender I plan to have some modulars with a MT pattern (most likely Insa Turbo Dakar) and 265/75/R16s on. Am I looking at the right size? 2016 D4 HSE

1998 110 TUM HS FFR Hard Top XD WOLF

1982 Series 3 SWB Petrol

4th Jan 2012 4:34pm

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 8166

2011 Defender 110 Puma 2.4 USW Stornoway Grey

235.85R16 and 265.74R16 are both pretty much the same as 750.

(235 (width)x 0.85(aspect ratio) x 2 )/25.4 + 16 = tyre height in inches

31.10.50x15 = 31" tyre height, 10.5" wide on 15" rim Cheers

James
110 2010 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop

4th Jan 2012 4:52pm

fekete

Member Since: 24 Dec 2008
Location: Here on the other end of the computer
Posts: 3626

2007 Defender 90 Puma 2.4 HT Bonatti Grey

http://www.1010tires.com/tiresizecalculator.asp
http://www.miata.net/garage/tirecalc.html NEVER TAKE LIFE SERIOUSLY. NOBODY GETS OUT ALIVE ANYWAY

4th Jan 2012 5:29pm

T1G UP

Member Since: 08 Dec 2009
Location: Bath
Posts: 3101

2011 Defender 110 Puma 2.4 XS CSW Orkney Grey

a td5 will pull the gearing fine with 285's. not sure about a 300 110. a puma has a lower first gear so again i can't see any issues

4th Jan 2012 5:42pm

JWL

Member Since: 26 Oct 2011
Location: Hereford
Posts: 3443

I've got the Insa Turbo Dakkars on mine in 265/75 16, while they're not to bad on the road handling wise just be aware that it's like having a set of military bar grips on for noise

Even though it doesn't bother me too much I am aware that I have to turn up the radio a fair bit and it still doesn't drown out the drone

4th Jan 2012 6:52pm

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17600

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

I am running 285/75x16 KL71s on my Puma 110 with no issues. The speedo is spot on measured with a Robic (home office approved) device, and I usually pull away from rest in 2nd.

4th Jan 2012 7:28pm

Page 1 of 1

All times are GMT

Jump to

< Previous Topic | Next Topic >

Posting Rules

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum