Complete wheel diameter

[Doctor Tom]

Need a favour guys.

Want to do some rake and trail calcs - to make sure I get any mods right.

Need to know the diameter or radius for that matter of a complete 21" front wheel including tyre.

I think it's a bit bigger than my current 19"

Thanks in advance

DrT

[girlyglide]

Diameter of front tire. 21" front typically 27.60". 19" front typically 26.10". 16" front typically 25.30"

Look at RB Racing Rake and Trail Calculator for more info.

[Doctor Tom]

Thanks for that GG

I have seen this web site.

The thing that bothers me is the "typically"

Was just wondering how acurate it was??

DrT

[shovelmark]

Have a look at Avon's website - Avon Tyres Ltd - Home - you can get over- all diameters for all their tyres on there......a 90/90 x 21 AM20 is 27.6inches /700mm o/d,hope that helps,
Mark

[girlyglide]

Originally Posted by Doctor Tom

Thanks for that GG

I have seen this web site.

The thing that bothers me is the "typically"

Was just wondering how acurate it was??

DrT

The overall diameter will depend on the tyres profile height, without knowing what tyres you are using it is impossible to give accurate answers.

The figures given on the website are good enough to work with.