↓ Advertise on Defender2 ↓

Home > Wheels & Tyres > Going 16 to 18 planned but is my maths wrong?
Post Reply  Down to end
Page 3 of 3 <123
Print this entire topic · 
agentmulder



Member Since: 16 Apr 2016
Location: Outer Space
Posts: 1324

Kuwait 
Out of interest and tangentially on topic...

Love the look, and also can understand the appeal on the road, but with all other things being equal - what differences can you expect with 18" off-road? Especially mud/MT, I'm dealing with mud often. (Or is A/T more realistic?)

I can make some reasonable guesses but obviously it's better to hear from your real world experience Thumbs Up Solved the bowel problem, working on the consonants...
Post #566375 24th Sep 2016 9:05pm
View user's profile Send private message View poster's gallery Reply with quote
Grenadier



Member Since: 23 Jul 2014
Location: The foot of Mont Blanc...
Posts: 5765

France 2011 Defender 110 Puma 2.4 DCPU Corris Grey
I've not been in mud, but I'd assume much like a tractor, that if you gave larger wheels and an appropriate tyre which does its job, that they should at least match, if not out perform an equivalent width 16" wheel? Tyre width in mud, which wouldn't necessarily differ between 16" and 18" would gave a greater influence. As for others off road areas, which I have done, (gravel tracks, grass, etc) no noticeable difference. Again, I suspect the tyre would be the main concern in struggling on any of those surfaces before rim size played a factor. Ultimately, if they underperformed over their 16" cousin, I can't imagine Bowler using them for their Challenge Series? Monsieur Le Grenadier

I've not been everywhere, but it's on my list.....

2011 Puma 110DC - Corris Grey
Post #566409 25th Sep 2016 7:37am
View user's profile Send private message View poster's gallery Reply with quote
JOW240725



Member Since: 04 May 2015
Location: Suffolk
Posts: 7866

United Kingdom 2012 Defender 110 Puma 2.2 XS CSW Orkney Grey
I've been told many a time for off-road stick with 16", I suspect mainly to allow the 'deeper' tyre to protect the alloy more. Also able to deflate more.

My opinion is Anthracite all the way, for me I like the contrast between alloy and tyre. I sometimes think black alloys get lost in the tyre (when clean). Black alloys on black Defender look good when all black. But all totally personal preference. Thumbs Up James
MY2012 110 2.2TDCi XS SW Orkney Grey - http://www.defender2.net/forum/topic43410.html
MY1990 110 200TDi SW beautifully faded Portofino Red - https://www.defender2.net/forum/post743641.html#743641
MY1984 90 V8 Slate Grey - https://www.defender2.net/forum/post744557.html#744557
Instagram @suffolk_rovers
Post #566427 25th Sep 2016 9:25am
View user's profile Send private message View poster's gallery Reply with quote
jomara



Member Since: 26 Oct 2009
Location: Lanarkshire
Posts: 1754

Scotland 2014 Defender 110 Puma 2.2 XS CSW Santorini Black
We did the LR trek in May last year, there was still lots of snow lying and the ground was soft and muddy, we had no problem getting around on the 18in BFG ATs fitted to,the 110 Thumbs Up
 2014 110 2.2TDCi XS Station wagon
1971 Bowler Tomcat 88 4.2 V8 Auto
2022 110 250D XS
Post #566645 26th Sep 2016 2:53am
View user's profile Send private message View poster's gallery Reply with quote
chrisb



Member Since: 16 Aug 2011
Location: Dark Peak
Posts: 25

United Kingdom 2012 Defender 110 Puma 2.4 XS CSW Santorini Black
I love the look of those wheels Smile
I had the twisted 18's on my 110, and think the wider tyres really suit the 110. The BF's were pretty good at handling most things I threw them at, including plenty of snow.
Then only issue was the amount of snow / mud that got deposited up the side of the Defender - mind you it looked great Surprised
Post #566676 26th Sep 2016 10:11am
View user's profile Send private message View poster's gallery Reply with quote
Cupboard



Member Since: 21 Mar 2014
Location: Suffolk
Posts: 2971

United Kingdom 2011 Defender 110 Puma 2.4 HT Corris Grey
Performance of different dimensions of tyre:

Tall or narrow tyres have a lower rolling resistance, wide or short ones have a higher rolling resistance.
Traction is dependant on the length of the contact patch, for a given pressure and load a narrower tyre will have a longer contact patch forwards/backwards but a narrower contact patch side to side.
When cornering, there is a tendency for the tyre to come away from the road on the inside edge. The shorter the sidewall, the less it will do that. The wider the tyre, the less it matters.
It is useful to be able to lower tyre pressures when driving on poor surfaces. This lengthens the contact patch (more traction and more flotation), allows the tyre to better conform to the surface (more grip) and also provides a more comfortable ride. The lower profile the tyre, the less you can do that.

So, for most conditions off road you will have better performance from tall, narrow tyres running low pressures because that gives you maximum traction. A lower profile and/or wider tyre will give you better cornering performance.

For what it's worth I have witnessed that in person with my Defender and with other vehicles, and we also run narrower tyres on our ploughing tractor compared to our top work tractors (traction isn't the only reason for that it has to be said). Further reading here: http://www.expeditionswest.com/research/wh..._rev1.html

Edit: I'm running 7.50R16 tyres and have the Gwyn Lewis mud flaps. Despite wading through goop on a regular basis I've never had a cleaner car.
Post #566685 26th Sep 2016 11:45am
View user's profile Send private message View poster's gallery Reply with quote
Nostromo



Member Since: 17 Jul 2015
Location: The Mendip Hills
Posts: 73

United Kingdom 
Hi,

Regarding your original question this interactive visuliser which you can find on the net is quite useful:-



Click image to enlarge


And proves all the earlier maths correct !

Very Happy
Post #567776 30th Sep 2016 9:01am
View user's profile Send private message View poster's gallery Reply with quote
Augustus



Member Since: 23 Mar 2016
Location: Carcassonne
Posts: 86

2014 Defender 110 Puma 2.2 SW Corris Grey
Thanks Nostromo.

Thread up here with the outcome…

http://www.defender2.net/forum/topic49689.html
Post #571492 17th Oct 2016 12:41pm
View user's profile Send private message View poster's gallery Post Reply
Post Reply  Back to top
Page 3 of 3 <123
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



Site Copyright © 2006-2024 Futuranet Ltd & Martin Lewis
DEFENDER2.NET RSS Feed - All Forums