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I recently purchased these rims for track:



Stock MR2 Spyder rims. Problem I'm facing now is that the holes on the rims are perfectly flat and my wheel nuts are tappered. Illustration below:



I've ran one track day with the tappered nuts and it was ok but it seems like inside edges where the wheel and nut touch are getting a tad worn. I've seen stock Toyota wheel nuts and they seems sit flat on the rims with some washer over it.

Do you reckon it's safe running my current setup, or better if I actually got Toyota MR2 wheel nuts (12 X 1.5). Does stock MX5 wheel nuts have a flat base too? Any other alternatives?

Thats just like most old school wheels, they are designed to be used with a different type of nut. It is a straight shanked nut.


A special conical washer is available to use std wheelnuts. I don't know where else they are available but I think performance wheels used to make them.

Tim

Where did those wheelnuts come from?

My friend recently got some aftermarket wheelnuts for his car and had a similar problem...

It was pointed out to him that the wheelnuts he was using were supposed to be used with aftermarket (or JDM) rims...

Problems? shouldnt be TOO bad on the roads... if they dont jiggle about theyre as good as safe... thats not to say that theyre holding the wheel properly... they probably arent stressed enough to be dangerous

the best solution would be to find proper fitting wheelnuts... (the normal flat bottome ones? werent those the universal fitment?)

I would reccommend NOT using those nuts with those rims at all, as alluminium alloy is very soft and as you say begins to wear, not good at all, and definately not safe. If you go to any tyre shop you should be able to get the old school type nuts and washers to fit the 5(I think they are just a std 12x1.5 thread at a guess)

You may also need to ream out the holes with something to remove the 'worn' bit from around the holes so the proper nuts will get through too.

Hope this is some help, Tim

Go for the genuine Toyota ones - Just make sure you're sitting down when you find out how much they cost....

What is so good about the gen toyota ones? The last time I got a set of chrome ones from the tyre shop they were a couple dollars each and were fine

no need to go toybota ones. just buy ones that fit your studs and the rims from a tyre or wheel shop if they dont have them they will most likly know someone that will. but i would be listening to Mr zoomzoom here and getting these studs asap if i was you

irwin83r wrote:no need to go toybota ones. just buy ones that fit your studs and the rims from a tyre or wheel shop if they dont have them they will most likly know someone that will. but i would be listening to Mr zoomzoom here and getting these studs asap if i was you

Yeah, I'll be looking at proper nuts before I use the rims next time. After all, they are my track rims and I don't use them unless I need to

Lug Nuts? Bloody Americanisms

GP wrote:Lug Nuts? Bloody Americanisms

Fixed

I never knew lug nuts was an American term. Think I'll stick with wheel nuts from now