2003 Big Dog Mastiff tire

[sk81135]

Can I put a wider tire on my 2003 mastiff? Right now it has a 240mm rear tire.

 

[Mr. Wright]

You can get a 250 in there, but the belt will rub the side of the tire. Some people will grid to lip on the side of the tire down, as I have in the past. I'm running a 240 now, and just tell everyone it's a 250, you really can't tell the different.

 

[sk81135]

Thanks! I was afraid of rubbing but wasn't sure

 

[Joose3]

I had a similar problem on my '06 K9. I replaced the rear tire with a Metzler instead of an Avon. Apparently the Metzler was a slight bit wider because the drive belt was rubbing on the tire. I found a 1/8" spacer on eBay that goes between the pulley and the hub to move the belt outward a bit. Works great. Moved the belt out just enough to keep it from rubbing on the tire.

Sent from my XT1254 using Tapatalk

 

[Joose3]

You just have to pay attention to where the belt is tracking on the drive pulley when or if you do this.