How much wheel offset is too much?

Mitsubishi Delica L400 production commenced in 1994 -- After much anticipation, the L400 arrived on Canadian Soil in 2009!
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tonydca
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How much wheel offset is too much?

Post by tonydca »

I've been reading up on suspension geometry, wheel offset, scrub radius, etc., etc., and I understand the theory pretty well, but I have a practical question for anyone out there who's played around with their wheels a bit...

I sourced some zero-offset 15x6 wheels off a Toyota Landcruiser and stuck them on my van with some 235/75/15 snow/off-road tires, and I *really* like the way they look. Clears the wheel arches (after a bit of attention with a sharp knife to the bumper 8-) ), widens the stance a bit but not enough to draw unwanted police attention, and seems to drive/corner/track-straight just fine.

I understand that by moving the wheels out-board about an inch I have increased the load on my outer wheel bearings and all that good stuff. I already have a worn wheel bearing I think - I used to hear it rubbing away when I turned right (loading down the left wheel), now I hear it all the time unless I turn left (unloading that wheel). I'm prepared to fix that and make sure that they continue to stay well greased and happy.

But given that these tires are my "go-play-in-the-mud-and-snow" set, I'm curious if anyone has had premature component failure from having a setup like this.

A lot of the internet forum discussion about offset changes are from the racing/track crowd and concern funky handling characteristics when cornering/changing direction at high speeds under heavy lateral loads. Not really my worry...

But I don't have enough serious off-road experience (read: breaking stuff) to know if I am setting myself up for disaster here. I have to believe that the wheel/suspension/steering setup on these beasts is overengineered to take a fair amount of abuse, but like the title says - how much is too much.

Any experience out there running oversized wheels with no problems? Big problems? Thanks,

Tony.
Cry "Havoc!" and let slip the elementary-school-aged boys...
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thedjjack
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Re: How much wheel offset is too much?

Post by thedjjack »

If the tire sticks out past the body (at all) it is illegal and the police will give you a VI notice.

Depends on the bearings. Jeeps with a dana30 front axle will go through bearings in 20,000km or less with wrong offset. No idea of L400 front bearings other then they will last a long time with stock offset rims.
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