Wheel changes for EVO brakes?

[Trundlebike]

I've got a 99 non-ABS that I'm bringing back from an accident I had in July of last year. Part of the rebuild involved a "new" front wheel. I put new discs on the new wheel but when I went to tighten the caliper on the left side the wheel froze. Looking at the caliper I could see that the inside pad was tight up against the brake disc. These are pretty well worn pads due for replacement. To shortcut the story I started measuring and all the spacers were correct. The difference was in the measurement (out to out) between the disc mounting surfaces. The new wheel is about a 1/4" narower than the old wheel. bolted the new discs to the old wheel and no problem except that the old wheel is now ugly and way out of true. Is anyone aware of this? Is it an accomadation for the "EVO" brakes? To be fair to the seller I don't think they were aware of this at the time of sale, but I'd like to know before I contact them.

[BadToTheBown]

There are differences in the wheels and if you search the forum, there's at least a couple of threats on the subject...I had a '99 as well but mine was ABS...I'll offer some differences but you should still take the time to find the threads for depth the subject...
-early bikes had smaller rotors (300mm?) and later 320mm, rotors will swap but there's a hitch, early wheels have a machined relief in the rotor mounts for the smaller base circle to clear the calipers/pads, so later rotors work on early wheels BUT early rotors on later wheels are a problem
-ABS and non-ABS wheels, early ABS rings where about 4mm thick (castings) if memory serves, later only 1mm (stamped steel), so IF you have an early ABS wheel on an early ABS bike, like a '99, you need to space up the ABS ring side (have done this myself)

Hope this helps...

[Trundlebike]

That helps a lot, thanks. 4mm seems about right for the discrepancy. I considered puting some shims in there and will probably do that to save the hassle of having to change the tire and trying to find a new rim. I did a search with the words EVO, brakes, etc. and didn't turn up much of use, but of course just because I didn't find it doesn't mean it isn't there. Thanks again.