stock wheels rub on fender mounts

[stecz]

Ok... I'm missing something...
It looks like the Exocet fender mounts won't work with stock rims. I was working on mocking up the fender mounts, and it's not even close. When I install the factory wheel/tire, the front wheel front fender mount not only touches the tire, but it touches the rim.  I don't know that even a 1cm spacer will work.

Is that expected?  Or am I doing something wrong (yes, the rotor is on the hub).

It looks like 10mm spacers are $30 each, so in additional to refinishing my wheels I'll need to spend an additional $150 or so for spacers and longer studs (not including new lugs, which I need to replace anyway).

Is there a good reason why the fender mounts don't work with the stock rims?

How do I determine what rims will work with the fender mounts?

thanks

John S.
(yes, this build is taking me darned near forever)

[dietcoke]

"Is there a good reason why the fender mounts don't work with the stock rims?"

Because stock miata rims are not stock exocet rims.

[miket]

Might be different across the pond, but in the UK stock wheels need around a 32mm (hubcentric) spacer.

[stecz]

I went back to the build manual and it does say you need 0-10mm offset wheels. I was trying to save some money on the initial build and refinish the stock rims, but after I spend time refinishing, purchase 30mm worth of spacers, longer studs, etc. (plus I need new tires), I'm better off, just biting the bullet and buying a suitable tire and wheel package. however, I'm glad I asked this because I would have ended us with rims that need the spacer anyway... thanks for the help.

[buildercg]

I also found this out the hard way by not doing all the research first. My donor came with both a set of stock wheels and a set of aftermarket wheels which have very different offset. My stock wheels won't fit over the Wilwood big brake calipers that I have and I found that I needed to go with 32mm spacers for my aftermarket wheels to push them out far enough. The spacers weigh almost quite a bit: I'd estimate about 2 pounds. That's quite a lot of extra un-sprung weight but I don't have the budget for new wheels right now. 

[jsmith]

I've heard that the fender mounts from Exomotive sometimes require some manipulation (bending) to properly fit, even with the proper wheels / offset. Doesn't sound like a big deal though....