33 inch spare
JK Newbie
Joined: Aug 2010
Posts: 73
Likes: 0
From: Independence, Ky
No, this is not true...You should be good with a 33 on the back of the tailgate, most guys run a 35 on there with no problems. I would recommend getting the Daystar extended tire bumpstops though. 
JK Junkie
Joined: Jul 2008
Posts: 2,088
Likes: 2
From: Tooele (two-willa), Utah
I haven't noticed any problems. I did replace the tire stops. Anything bigger and you will block your third brake light and overstress the stock carrier. 33 inch is just right to keep it stock.
JK Super Freak
Joined: Sep 2010
Posts: 1,366
Likes: 0
From: Milwaukee, WI
I didnt even know those daystar stops existed. That might help with mine which when the tops off with no radio on i can hear it creaking. Probably wobbling too much on the back which is more than likely what causes some carriers to fail.
