Tyre size calculator

db · Post by db » Thu Sep 27, 07 5:01 pm

Useful tool:

http://www.alloywheels.com/tyrecalc.asp

Dave-R · Post by **Dave-R** » Thu Sep 27, 07 6:14 pm

No it isn't.

All three of my spreadsheets have a better calculator than that. Mine even tells you what tooth speedo drive you need.

db · Post by db » Thu Sep 27, 07 10:27 pm

Fair comment.

I'm very grateful for yours Dave, i used it to calc my req'd tyre size/ rear gearing etc. It was easy to use & gave me the confidence to buy lots of stuff and be pretty sure it'll all work together.

To be honest i used this one to find what rim width i need for a 160 bike tyre, not sure yours covered that

the dodge · Post by **the dodge** » Fri Sep 28, 07 9:19 am

dave is your spreadsheet/calculator available for all to use, as ive put mustang wheels on my dodge and cooper tyres, the orignal ralleye wheels were 14" with 205/70 tyres, the mustang wheels are 15" and ive fitted 235/60 tyres the calculator i used said at 70mph my car would be doing 72.22mph so im presuming 30mph would be 30.95mph

Dave-R · Post by **Dave-R** » Fri Sep 28, 07 9:57 am

the dodge wrote:dave is your spreadsheet/calculator available for all to use

Check out this thread;

http://www.moparuk.com/forums/viewtopic ... 493#178493

Also I have this thing which has all sorts attached to it;

http://www.challenger440.pwp.blueyonder.co.uk/maths.xls

db wrote:To be honest i used this one to find what rim width i need for a 160 bike tyre, not sure yours covered that

I usually just convert the tyre width to inches and reason that the wheel wants to be anywhere from between the same width and 1.5 to 2.0 inches narrower (you can get away with a narrower wheel with a fat tyre).

But I could add something to do that I guess?

the dodge · Post by **the dodge** » Fri Sep 28, 07 11:08 am

dave that is some pretty impressive stuff you have there

thanks

db · Post by db » Fri Sep 28, 07 7:22 pm

Dave wrote: But I could add something to do that I guess?

Might be useful, i know it's something i struggle with

Dave-R · Post by **Dave-R** » Fri Oct 19, 07 4:19 pm

I forgot I was going to add a wheel size feature wasn't I?