Tire Size for 250

[chuck]

My 75 250 Hare Scrambles has a 100/110 tire on the rear. Back in the day I thought we ran 450s. Isn't the 100/110 equivalent to a 400.  Is a 450 too big?

Thanks,

Chuck,


72 125 Six Days
74 250 Hare Scrambles
74 250 Maico
73 250 Honda Elsinore

[Steve Minor]

Found this chart online....can't swear by it though.


********************* OFF-ROAD TIRE SIZE CONVERSION CHART *********************        
FRONT TIRES: METRIC  METRIC  INCH        
             ======  ======  =========        
             60/100   90/80  2.50/2.75        
             70/100   90/80  2.75/3.00        
             80/100  100/80  3.00/3.25        
             METRIC  METRIC    INCH        
REAR TIRES:  ======  ======  =========        
             80/100   80/90  2.50/3.60        
             90/100  110/90  3.60/4.10        
            100/100  120/80  4.00/4.10        
            110/100  130/80  4.00/4.50        
            120/100  140/80  5.00/5.10        
*********************** MOTOCROSS TIRE SIZE APPLICATIONS **********************        
MOTOCROSS BIKE        
ENGINE CC SIZE  FRONT       REAR        
==============  =========   ======================        
      50         2.50-10       2.50-10        
      60         2.50-14     80/100-12        
      80       70/100-17     90/100-14        
  80-100       70/100-19     90/100-16        
 100-125       80/100-21    100/100-18 OR 100/90-19        
     250       80/100-21    110/100-18 OR 110/90-19        
     500       80/100-21    120/100-18 OR 120/90-19

Steve Minor
Wilmington, NC

[Mick Milakovic]

Hi Chuck,
I also have a '75 Harescrambler, and I run a Kenda 257D on my bike. Its a 110/100 and it also says 4.50 x 18 on the sidewall, so it sounds like they are the same.  It looks very vintage, hooks up nice and spins off the line.  It has given me good wear life, and the best part, it only cost 45 bucks! Hope this helps, Mick.

[Dwight Rudder]

The Pirelli MT16 in the 110/100X18 size ( formerly called 400X18 ) is perfect for your bike.  The 120/100X18 ( formerly 450X18 ) is a huge tire similar to those that came on the Ossa SDR.
The MT16 front is also a very good tire.  Both tires are good enough that I use them on my modern bikes but they look vintage.
Cher'o

Dwight Rudder
7 time ISDT / E medalist
8 time National Enduro Class Champion.