Marcos Maniacs group photo

Yahoo Groups archive

Marcos Maniacs

Index last updated: 2026-04-28 23:07 UTC

Thread

Tire circumference calculation, and even more !!!!!

Tire circumference calculation, and even more !!!!!

2001-10-11 by Lee Brinkley

Hi all,

My first contribution and I hope it will be of some use. I'm a designer
for Roush Technologies Ltd here in the UK, I am sure that any of you who
follow Nascar racing will be familiar with the name Roush. Last year
while desining a new wheel and tire package for one of our european
customers I came across a very usefull web site which has an interactive
wheel and tire size calculator built into it. It is very simple to use
and the only information you need to input is the tire specification and
wheel diameter i.e. 195/65SR14. Many differnt combinations can be input
at the the same time for comparison of results, very useful to anyone
concidering changing to a larger wheel diameter but wishing to keep the
rolling circumference as close to original as possible. Listed below are
the results this programme will give :-

1. sidewall height
2. radius
3. diameter
4. circumference
5. revolutions/mile
6. percentage difference

The web site that you need to access is www.powerdog.com/tiresize.cgi

Have a go and see how easy it is.

My own car is 1600 GT chassis Nr. 5097 Reg Nr. SMX 138F as featured in
the brooklands profile book on marcos cars. It is currently sitting in
the garage suffering from a lack of my time to continue with its
restoration and has been modified in the distant past by persons unknown
from its original specification, engine change now 1600 X/Flow, gearbox
change and swap from left to right hand drive.

Good luck and it would be nice to hear from any owners of wooden cars
especially 1600's..... 

--
Lee Brinkley

(Home)
29 Hilside Road
Southminster
Essex
CM0 7AL


lbrinkley@...
(044)(0)1277 261400 (work)
(044)(0)1621 774642 (home)
Fax: (044)(0)1277 261525

This message and any attachments are confidential and intended only for
the 
named recipient.  Views and opinions contained herein are those of the 
author unless clearly stated as being that of Roush.  If you are not the 
intended recipient please notify the sender immediately and do not 
disclose, copy or use the contents in any way.
Roush Technologies Limited.  Registration No. 3854474

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.