<VV> Re: Wheelz

[Charles Lee at Proper Pro Per]

I've got 195/70 14x6 front and 205/70 14x7 rear on a 1967 Monza, and turns 
fine (except maybe turning into steep driveways ?)


----- Original Message ----- 
From: "Padgett" <pp2 at 6007.us>
To: <virtualvairs at corvair.org>
Sent: Friday, October 27, 2006 4:26 PM
Subject: <VV> Re: Wheelz


> Ran some calculations and am now thoroughly confused. Used offsets, 
> backspaces, treadwidths, tire diameters, and the Monty Pythagorean 
> theorumumumum to figure the arc that the edge of the tread makes for 
> different tire sizes and wheels. What I came up with was:
> 7.00x13 on stock 5.5: LM wheels:  12.8 inches
> 185x80 on stock wheels                12.6 inches
> 195x70 on 14 inch wheels*            13.0 inches
> 205x60 on 15 inch wheels**           12.9 inches
> *  American Torq-Thrust D 14x6 3.3/8 BS
> ** American Torq-Thrust D 15x6 3 5/8 BS
> (from AmericanRacing.com)
>
> Given this, the 195/70/14 going to come the closest to the wheel well lip 
> on a turn but not by that much more than the stock tire.
>
> So I got out the tape and measured the wheelbase: 108.5" on both sides. 
> That extra half inch would certainly explain why I had trouble with 
> 195x70s when most find that 205x70s fit just fine. Measured the distance 
> from the centerline of the wheel to the front lip (that had been 
> "persuaded" a little) and got 13.2 inches. Centerline to rear of front 
> wheel lip 15.8" hmmmm.
>
> Drives fine and straight, even at high speeds but where did that extra 
> half inch come from ? Factory tolerance ? Is there that much adjustment 
> available in the front crossmember ? Yout wants to know.
>
> Padgett
>
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