Tire Conversion Tables

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Written by Mr Tidy   
Friday, 11 June 2004

Reprinted by Permission from Mr Tidy's Tech Tips

 TIRE CONVERSION TABLES:
 (Road Star OEM in bold-italics)
Thanks to Bob Cody

FRONT TIRES

REAR TIRES

Metric

Alpha

Inch

Metric

Alpha

Inch

80/90 MH90 2.50/2.75 110/90 MP85 4.50/4.75
90/90 MJ90 2.75/3.00 120/90 MR90 4.50/4.75
100/90 MM90 3.25/3.50 130/80
 
5.00/5.10
110/90 MN90 3.75/4.00 130/90 MT90 5.00/5.10
120/80
 
4.25/4.50 140/80
 
5.50/6.00
120/90 MR90 4.25/4.50 140/90 MU90 5.50/6.00
130/90 MT90 5.00/5.10 150/80 MV85 6.00/6.25

 

 

 
150/90 MV85 6.00/6.25

 

 

 
160/80
 
6.80/7.00

 

 

 
180/55
 
7.00/7.25

 

 

 
200/60
 
7.90/8.00

 

 

 
230/50
 
9.50

 

 

TIRE / RIM SIZE TABLES:

Size

Rim

OAW

OAD

120/80V16  2.75  4.7  23.8
130/90H16 3.00 5.0 25.4
130/90V16 3.00 5.2  25.0
500S16 3.00  5.2  26.4
MT90H16 3.00 5.3 25.3
130/90H16 3.00 5.4 25.8
140/90H16 3.50 5.8 25.6
140/80VB16 3.50 5.9 24.8
140/90H16 3.50 6.0 25.8
150/80V16 3.50 6.2 25.4
160/80H16 4.00 6.4 26.1
160/80H16 4.00 6.8 26.1
200/60VB16 5.50 7.9 25.9
120/80V18 2.75  4.8  25.9
120/90V18 2.75 4.8 26.4
120/90H18 2.75  4.8 26.4
130/80V18 3.00 5.2 26.3
130/70VB18 3.50 5.4  25.4
150/70VB18 4.00 5.9  26.2
140/70V18 4.00  6.1  25.7
170/60VB18 4.50 6.9 26.0
180/55VB18 5.50 7.0 26.3
230/50X15  7.0-8.0 9.5  25.3



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DISCLAIMER: This information and procedure is provided as a courtesy and is for informational purposes only.  Neither the publishers nor the authors accept any responsibility for the accuracy, applicability, or suitability of this procedure.  You assume all risks associated with the use of this information.  NEITHER THE PUBLISHERs NOR THE AUTHORs SHALL IN ANY EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, PUNITIVE, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, OF ANY NATURE ARISING OUT OF OR IN ANY WAY CONNECTED WITH THE USE OR MISUSE OF THIS INFORMATION OR LACK OF INFORMATION.  Any type of modification or service work on your motorcycle should always be performed by a professional mechanic. If performed incorrectly, this procedure may endanger the safety of you and others on your motorcycle and possibly invalidate your manufacturerís warranty.


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  Comments (10)
Rear tire
Written by K Becker, on 11-10-2011 10:25
Road Star 2005 ,1700 
What is the max tire size for the rear that i can go without modifying anythings?...thanks
Tube versus Tube Type tires
Written by Hardley, on 01-05-2011 19:22
I have a 2005 Roadstar with alloy wheels that uses a Bridgestone G703 tubeless front tire. Can i use a Bridgestone G703 tube type tire on my alloy wheel?
max front wheel
Written by jlittlet, on 09-01-2010 21:53
Hello, I have been a reader for about 2 years and owner a lil longer than that. Love my roadstar and want to start makin mods. 04 Roadstar. What is the max size front wheel for my roadstar? 18 inch? 21 inch? Do i have to change the fender to go to 21 inch? 
 
Thanks
rear tire
Written by poohsdiddy, on 05-24-2010 12:31
2003 roadstar silverado : rear tire size- 150/80-16 . I am getting ready to put a new rear tire on ,the manual recommends bridgestones or dunlops , I've been hearing alot of good things about Metzelers for ware also how bad does a black rear tire look with a front WW
oversize
Written by ghost_flamed, on 04-15-2010 16:00
To answer any questions, I am running a 160/80-16 on my RS. Seems to be the max recommened size according to my dealer and my other tire dealer as well. handles really well at the dragon. 
I remeber I went as far as a 200 series tire on my Vstar.
max rear tire size
Written by bosv, on 11-26-2009 19:15
what is the max tire size for the rear that i can go without modifying things?...thanks
Max rear tire size
Written by steelwheell, on 10-15-2009 18:23
What is the max rear tire size for my stock Roadstar? thanks Steve
Written by MY-STAR-1, on 12-15-2007 15:58
HERE IS MY QUESTION .WHAT IS THE DIFFERENCE BETWEEN A 130/90 AS OPPOSED TO A MT90? THE PRICE DIFFERENCE IS QUITE SIGNIFICANT MAKES ME KIND OF LEARY ABOUT GETTING A MT90.
tire size
Written by charliez, on 11-01-2007 22:18
That is a good question .I have been thinking the same.A little larger rear would look nice!Also how big a tire can you go with the stock rims?I have about 5 grand on mine & the tires (bridgestones) are looking a little worn.I think I will go with a different tire make next summer.
tires
Written by riggs65, on 07-04-2007 06:23
on average how long should tire last !

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