how big can i go with a stock 05 vrod on the back tire

 

I also have an 05, 180 is stock not sure if you could get a 190 or 200 on a stock rim???

 

180. Why compromise safety and performance by putting on a tire that's too wide for the wheel? What is your objective?

 

You can put a 200 on the rear without any significant issue. You *may* have to trim down the lip on the saddle bag supports under the fender to clear, or you could just remove them.

The belt guard *may* also need a little grinding to clear the tire.

Putting a 200 on a stock 2002-2006 V-Rod is pretty common place. I've had one on my 2003 since my first tire change, and on my GF's 2006 since we got it home from the dealer.

 

Change 2003 to 2006 and RJ is speaking for me too. The very slight trim that you may have to do is not an issue, you will not compromise the integrity of the bike in any way, nor will the bike then become "unsafe". I am running the Metzeler 200/50-18 tire and will replace it with the same when it wears out. Avon also makes a 200/55-18 that will fit as well with the same possible trim issues.