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