Road Star Forum	ForumThreaded ViewRules

Welcome, Guest Please Login or Register.    Lost Password?

Favoured: 0

TOPIC: fat tire /wheel size Forum Tools Post New Topic Show latest posts Rules

#3360 biggame (User) Fresh Boarder Posts: 14 fat tire /wheel size 6 Years, 7 Months ago   fatbike mentioned wheel size in his article but not width.i am ready to add a 180 to the rear of my r* but im not clear on wheel width.also how do you guage wheel diameter if running a lower profile tire?any help would be apreciated!   Logged     The administrator has disabled public write access. #3365 DocShadow (Admin) Hmmmm .... send beer Admin Posts: 17615 Re:fat tire /wheel size 6 Years, 7 Months ago   For a 180 tire go to the 5.5&quot; rim. For calculating your tire's diameter, take the tread width (180)and divide by 25.4. Take that total and multiply it by the tire height in percentage(.70). Take that total and multiply by 2. Take that total and add it to wheel diameter(16) = 25.92&quot; Stock = 25.45 180/70/16 = 25.92 200/60/16 = 25.45 180/55/18 = 25.8 200/55/18 = 26.66 200/50/18 = 25.87 Doc   Logged     My Bike Website   The administrator has disabled public write access. #3366 cool breeze (User) Fresh Boarder Posts: 55 Re:fat tire /wheel size 6 Years, 7 Months ago   Doc Can I put a 180x16 on my stock R* rim? Steve   Logged     The administrator has disabled public write access. #3367 biggame (User) Fresh Boarder Posts: 14 Re:fat tire /wheel size 6 Years, 7 Months ago   thanks doc!but where in the world did you find that formula?   Logged     The administrator has disabled public write access. #3371 USAFRETIRED (User) Moderator Posts: 552 Re:fat tire /wheel size 6 Years, 7 Months ago   Cool, you can but the problem is the tire sidewalls get pulled in reducing the width you are after. Most tire manufactures have a chart on their web page showing the recommended wheel width for tire sizes.   Logged       The administrator has disabled public write access. #3372 USAFRETIRED (User) Moderator Posts: 552 Re:fat tire /wheel size 6 Years, 7 Months ago   Biggame, there are some tools you can find on the web that will give you the conversions. I would recommend going to the tire manufacturer web page and look at their charts for dimensions   Logged       The administrator has disabled public write access. #3391 cool breeze (User) Fresh Boarder Posts: 55 Re:fat tire /wheel size 6 Years, 7 Months ago   Thanks USAFRETIRED I will start saving for those mags! Steve   Logged     The administrator has disabled public write access. #3393 TMK (Visitor) Re:fat tire /wheel size 6 Years, 7 Months ago   Biggame-- The 180mm is the tread width the 60-70-80 etc. denotes aspect ratio meaning the height of the sidewall is 60%, 70% 80% etc. of the tread width...There are 25.4mm per inch... Thus, the height of the overall tire and wheel package is calculated this way: width x aspect ratio x 2 PLUS the size of the wheel In this example you get: 180/25.4 = 7.07 x .70 (70 is the aspect ratio) = 4.96 x 2 = 9.92 + 16 (wheel size = 25.92! I know I am not Doc but I figured an answer is an answer Regards, Ted Post edited by: TMK, at: 2005/10/18 00:06<br><br>Post edited by: TMK, at: 2005/10/20 06:53   Logged     The administrator has disabled public write access. #4067 Dune (User) Fresh Boarder Posts: 3 Re:fat tire /wheel size 6 Years, 5 Months ago   All thats great but, what's the aspect ratio.. exactley? Dune   Logged     The administrator has disabled public write access. #4069 DocShadow (Admin) Hmmmm .... send beer Admin Posts: 17615 Re:fat tire /wheel size 6 Years, 5 Months ago   Aspect ratio = Ratio of a tire’s section height to its section width (height divided by width). For example, a 180/70 has a section height that is 70% of the section width. The smaller the number the less sidewall the tire has and the flatter it looks. Try this .... http://www.net-comber.com/tirecalc.html Doc<br><br>Post edited by: DocShadow, at: 2005/12/29 22:06   Logged     My Bike Website   The administrator has disabled public write access.

Forum List Technical Corner Article Discussions

...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... ...................................................................... -->