I know it a topic that's been discussed to death but I have a 2017 Fat boy lo S I'm looking at replacing both tyres front is 140/75 17 rear is 200/55 17 I'm looking at Michelin Commander 2 and Avon Cobra's there is roughly $50 diff in price really like to hear any advice.

None of the tyres will help it handle or steer!

Avon over the crap Michelin any DAY.  heard good things about the cobra in the wet

Sticking to my original comment, a fat boy will not go around a bend regardless if it had a tyre on the rim or not

I know a bloke, that would make you eat those words.

At the end of the day its about knowing the limitations, weakness and strengths of the tyre you run.

Well put.

If you ride pretty hard in the dry and also ride in the wet stay away from the Commander IIs! Sure youll get amazing mileage out of them (I got 38,000km on the rear of a street bob) but they are scary.

I just fitted a Bridgestone Battle cruise to the rear. Only just scrubbed it in, so can't really give a full honest opinion as yet. But it did feel pretty sure footed up and down the range each way from Cairns to  Mossman via Mareeba.

i recently replaced the the boots on my ultra from the dunlops to the commander ll .. after googling the shit out of everything and asking opinions i finally came to the conclusion that everyone has a different opinion on all of them .. so i basically went with my own thoughts.

I changed from the stock Michelin tractor tyres on my Fat Bob to Avon Cobras. 

i have the same tyre sizes on my 08 Fatboy and went the American Elite front & rear earlier this year.
very happy with them so far and noticeably more comfortable ride that the stock 407/408f i had before
 

I have run the original dunny tractor tyres on both of my fat bobs. I put a different brand on the back once as the dunny was unavailable and it let go real bad in the wet and scared the living fuck out of me. I ride most days unless the monsoonal weather is just too bad or we have a cyclone. I do not have a lot of twisties up here so can not rate them as others who ride these types of roads, but they have not let go on me yet. The dealer hates them as they last to long.

Funny you say that Humbug, I found the stock dunlop bloody woefull in the wet. 

Like someone else said each to their own. Maybe I am a soft cock when it comes to cornering,but roundabouts are always tricky in the wet ha ha.

yep ,hate roundabouts most times,dont know why,just do.

I rode that thing in the wet very cautiously and slow changes in throttle etc, and still had the back sliding and breaking loose. No issues in the dry with it however.

I recently bought some Metzelers for mine and I'm very happy with them.