I need to know what the widest tires I can get on the stock rims form a 99 DWG. I assume the rear is 16x 3.5 and the front is a 19 or 21x2.15. This is without mods gents. Thanks.

 

The best way to do this is to get a tape and check the distance from the inside mounting bolts(<_>)then find a tire that is 1/2" narrower to have 1/4" clearance on each side. most bikes can go one size bigger than stock

 

You really should have a better idea what diameter your wheels are instead of expecting us to find out or know! It's written on your sidewalls.

Stock front is 21" for which you can get a 120/70. Rear is probably a stock 3" rim on which you can get a 140/90, but you may have to modify the belt guard to get it in. If you fit a later narrow belt you may just squeeze in a 150/80.

 

The stock front is 21" x 2.15"...and you can NOT run a 120/70. If you change the front wheel to 21" x 3.25", you can run a 120/70.

The rear wheel, I had run a 150/80...but went to a narrower belt to do this (still have it if interested). Also have the stock rear with a 150, pulley and pulley cover - if interested, as I am running a 180 in the rear of my '97 WG.