Hi Glenn,
You asked:
>I'm looking for some advice on wheel fitment for my TR4. What is the
>widest aftermarket wheel that typically shows up on a TR4 used for
>frequent autocrossing?
First, let me congratulate you on your choice of cars for autocrossing!
<smile>
>I am thinking of a Panasport or Panasport Light
>in a 15x7 to get the old minilite look. Do you have any recommendations
>or knowledge of fitment problems with wheels this wide?
I'm running 15 X 7 Panasport wheels on my TR-4. They are a good
choice for this use, although the Lights might be better. Revolution
also makes a good wheel in this size.
>...Ever seen a
>15x8, or does this width start to create problems with clearance or
>suspension geometry.
Well, there's another consideration to take into account. What class
will you be running this car in? If you are going into E/P, a 7 inch
rim is the maximum allowed wheel width. If you are in going to be
in Street Prepared, any wheel width is legal. You may have clearance
problems with an 8 inch rim, as I ran into that when I borrowed Bob
Lang's wheels which had a bit more offset than mine do. They rubbed
the fenders until I removed the spacers that I use, thereby reducing
the effective track width a bit.
>Do you know the factory wheel offset or backspacing?
I'd have to measure that for you, as it I don't remember it off
the top of my head, I'm afraid.
>I have wheel studs, not knockoffs.
That's good, although I would strongly suggest upgrading to 1/2" studs
if you are going to be autocrossing on sticky tires (and especially
if you will use slicks).
>Any help would be appreciated. Thanks.
I'd be happy to help out with any other questions you might have.
Have fun,
R. John Lye
rjl@gt-classics.com
http://www.gt-classics.com
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