Wheel offset question

[Grant Lenahan]

It IS related to offset, but there are other factors too.

Again, this is all academic, since the 30 mm offset moves the wheels 
OUT.

Grant
On Nov 2, 2006, at 8:09 PM, Chris Thorp wrote:

> On Nov 2, 2006, at 3:25 PM, H wrote:
>>
>> The clearance between calipers and spokes is not directly related to
>> the offset. Offset describes where the tyre is located relative to the
>> hub (and caliper). When you check for fit, remember that the caliper
>> may move outward when the pads get replaced (I don't know how your
>> particular calipers are designed, so this might not be an issue).
>>
>> You will be looking for clearance between tyre and sheet metal (you
>> are moving the tyre outwards). Imagine a tight corner at high speed.
>> The outer suspension will be compressed and the wheel angled, so the
>> tyre may rub. Not only will the tyre be ruined, but also your paint.
>> Maybe that's how the current tyres got the way they are?
> I don't mean to seem argumentative, and I find your advice very
> helpful, but I'm a bit confused how clearance isn't directly related
> to offset.  If I put on a (hypothetical) 10mm spacer, which would
> change my positive offset wheel from ET30 to ET20, wouldn't I have
> exactly 10mm more clearance?
>
> As for the old tires, I'm pretty sure that wasn't the case.  It looks
> like the old tires were just run under-inflated.  They have severe
> shoulder wear just outside the "hard" center potion of the tread on
> both sides of the tires and on three of the four tires.
>
> -Chris
>
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