 | Home > Wheels & Tyres > 285/75/16 on Sawtooth wheels anyone ? |
 
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| mikeh501 Member Since: 07 Jan 2013 Location: United Kingdom Posts: 1142  
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You will find plenty who run 285 on 7j rims but the tyres should really be on 8jj
My fav is 255/85/16 |
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13th Sep 2015 6:29pm |
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| Lambley Member Since: 20 Apr 2013 Location: Mid Devon Posts: 1435 
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These were for sale on here a while back, maybe killer has some pics of them fitted, might be worth a pm....
http://www.defender2.net/forum/topic35067.html?view=previous |
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13th Sep 2015 8:16pm |
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| need4speed Member Since: 23 Nov 2012 Location: Kilmarnock Posts: 746 |
 Click image to enlarge 285/75-16 mickey thompson on sawtooth alloys with 30mm spacers.. |
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15th Sep 2015 2:38pm |
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| Defender-Stu Member Since: 14 Jun 2012 Location: South West England Posts: 1320
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I have been told 285x75x16 will mess up the gearing and could damage diffs and use more fuel?
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15th Sep 2015 3:00pm |
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| TDCi Guy Member Since: 17 Aug 2014 Location: Yorkshire Posts: 286 
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I run 285/75/16s although on boost alloys, they've been trouble free for 12 months now.
Obviously, like for like, a tyre with more contact with the road is going to use more fuel. However if you go for a more fuel efficient tyre in the 285 size to what you were already running in the previous size then they could actually work out better on fuel. In my situation I went from the standard grabber TRs to 285 BFG KM2s, I haven't noticed an increase in fuel consumption nor any adverse effects on gearing, the speedo reads the right speed at this size too! Not sure on how a change in tyre size would cause any damage to your diffs, aside from the fact that having chunky tyres makes you try to drive up things you probably wouldn't with stock tyres on  Tom
@tditomprice 100” Defender Hybrid 2010 Alaska White 90 HT |
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15th Sep 2015 3:24pm |
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| Defender-Stu Member Since: 14 Jun 2012 Location: South West England Posts: 1320
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Where is the like button lol, will have a look myself then
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15th Sep 2015 3:56pm |
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| need4speed Member Since: 23 Nov 2012 Location: Kilmarnock Posts: 746 |
Will raise gearing slightly. So acceleration will be dampened a little but at 70mph your revs will be reduced so in actual fact on a steady run your mileage will actually improve.. If your concerned about losing a little acceleration either get a remap or do what I did and fit a 4.6 V8......
Damage diffs? Nonsense.. Edit: Tyres don't damage diffs, bad driving does. Some people can grenade diffs with standard tyres/power.. |
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15th Sep 2015 5:30pm |
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| Defender-Stu Member Since: 14 Jun 2012 Location: South West England Posts: 1320
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Ooohhh dont talk V8 to me I get all excited lol
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15th Sep 2015 5:36pm |
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| Crs90 Member Since: 08 Jul 2015 Location: In my excavator Posts: 82 
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Cheers for the replies
Chris. |
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15th Sep 2015 7:47pm |
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| jackp Member Since: 30 Apr 2015 Location: West Sussex Posts: 31 
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I'm running a set on 16" sawtooths. I love them, kinda wished I had gone whites out tho.
Click image to enlarge Click image to enlarge |
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28th Sep 2015 6:47am |
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| need4speed Member Since: 23 Nov 2012 Location: Kilmarnock Posts: 746 |
What spacers you using jack?
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28th Sep 2015 9:02am |
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| jackp Member Since: 30 Apr 2015 Location: West Sussex Posts: 31
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Sorry forgot to say. There is a 30mm spacer on there, not sure of the make as bought them second hand. Seem strong and reliable so far. Been on about 3 months now. Let me know if you want any other pictures from angles or inside arches etc.
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28th Sep 2015 12:23pm |
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| mikeh501 Member Since: 07 Jan 2013 Location: United Kingdom Posts: 1142
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Because your gearing is taller (because the tyres have a bigger radius and thus a bigger circumference) which throws out your speedo a little, and which means you need more right foot to get up to speed using more fuel. The tyres are probably heavier too and effect it because of the extra mass which needs to be get rotated. The reason for diffs only applies off road and is because all that extra mass spinning on the end of the shaft is easier to cause a failure just simply because the tyres are bigger and heavier. Heavy off road typically involves spinning the wheels either on mud or rocks where your tyre can go from spinning to stopped v.quickly, and in that event that force is transmitted down your transmission. You can apply the same logic to tyres of the same size which have a more aggressive tread pattern. They now dont slip, they bite which transfers that load down through your shafts into your diff and transmission. Its a slippery slope of upgrades which leads to more upgrades as you beef up one area and then work backwards to other items. Ultimately you end up at the transfer box and gearbox! |
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28th Sep 2015 12:53pm |
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| wizz80 Member Since: 06 Dec 2012 Location: north devon Posts: 38 |
Was thinking of going that size myself but I don't have any lift will clearance be a problem I have spacers
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13th Oct 2015 12:43pm |
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