315/75 r16 - Defender Source
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  #1  
Old June 4th, 2014, 06:29 AM
banksy
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Question 315/75 r16

I've just put in a 2" lift with +50mm flexi arches and new 8" ProComp Rock Crawlers (-6mm offset) on their way. Has anyone installed 315/75 16 on their Defender? Interestered in feedback on fitting. Cheers
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  #2  
Old June 4th, 2014, 06:49 AM
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Plenty. One tip would be to search that size in the search bar and the threads pertaining to it should pop up. I've seen 345s as well.
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Old June 4th, 2014, 08:23 AM
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Not enough lift. You'll rub and they won't look right unless you gain altitude...
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  #4  
Old June 4th, 2014, 10:10 AM
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I was fine with a 2" OME and 315's on my 90. I did replace my bumpstops for taller ones and cut the stock flares where it was rubbing. IIRC, Red runs 285 SSR's which are big on stock height and longer bumpstops.

I liked the lower height but with taller/bigger tires and it did well at Rausch. It felt stable on off camber stuff and the taller tires give you that extra axle height - I noticed guys with 33's would clip there pumpkin where mine would just barely clear.
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Old June 4th, 2014, 11:23 AM
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A spring lift does not affect tire clearance.... You will need taller bumpstops in the rear and maybe the front. You then need to check in full articulation with the axles hitting the bumpstops. If your lift springs will not let you hit the bumpstops, you need to add enough weight to get it there for the testing.

Is this a 90 or 110? With a 110, watch the rear spring perches. It will be close with those rims and tires.

IMO a 2" lift is a great setup with the 35s on a 90. A taller lift loses stability and makes the link geometry horrible.
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Old June 4th, 2014, 02:45 PM
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Quote:
Originally Posted by JSBriggs View Post

Wha chu talkin bout Willis?

-Jeff
red often makes this point and i believe he is referring to the idea that some people lift their trucks with the mistaken assumption that it will increase tire clearance.

he is saying that although tire clearance may be improved at normal ride height, at full compression, the tire clearance will be identical to a stock rover.

therefore, extended bump stops are needed to increase tire clearance at full compression.
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Old June 4th, 2014, 03:04 PM
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Yes. Bump stops are what control the maximum compression travel, so they control tire clearance. The worst tire clearance is when the axle is fully compressed in articulation with the axle pressing into the bumpstop.

People get a false sense of security with lift springs as they are stiffer and it is harder to hit the bump stops. They then think there is more clearance. Under the right conditions the springs will compress enough and the tire will contact. If you have really stiff springs, you may need to remove the springs to check clearance.
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Old June 6th, 2014, 09:01 AM
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Thanks heaps for the feedback folks..
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Old June 7th, 2014, 07:50 AM
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I prefer a 2" lift for a 33" tire like a 285 or 255 and a 3" lift for a 35" or 315.
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Old June 7th, 2014, 01:11 PM
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Quote:
Originally Posted by TDI Guy View Post
I prefer a 2" lift for a 33" tire like a 285 or 255 and a 3" lift for a 35" or 315.
X2 - I have 3" rte and the wheel arches look way to big for 33s aesthetically.
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  #11  
Old June 7th, 2014, 08:01 PM
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What about 35x10.5" swamper SSR's with a 2" lift
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  #12  
Old June 7th, 2014, 08:04 PM
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If I remember correctly they run small. Really only 34s. BFG 255/85/16 run at 33.4 or so. Pretty close.
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