I have used the PR3GT twice and like it- no problems with cupping, last a long time too. But now those are probably gone too. So I, also, will be interested to hear feedback about the 4's and 5's GT now.
*DUH* I have been using PR4GT the whole time (corrected previous post)
Set 1, OEM Bridgestone: 4/2011, lasted 8,900 miles
Set 2, PR4GT: 3/2014, lasted 18,020 miles
Set 3, PR4GT: 5/2017, lasted 15,991 miles (had bad puncture and decided to replace)
Set 4, PR4GT : 10/2019, lasted 16,832 miles so far
Front is now wiped out (no tread on left side, not much on right). Rear is at wear bars in center and could go longer.
Last set: From rockymountainatvmc.com (was Jake Wilson), they charged tax this time, free shipping, $393 total. Now they have only the front PR4GT with no rear. They don't have the Road 5GT at all. The Road 6GT set is a jaw dropping $514!!
RevZilla has PR4GT front only as well. Road 5GT $514. Road 6GT in front only.
CycleGear has PR4GT set $374, Road 5GT set $515, no Road 6GT.
Are the 5's and 6's made of gold or something?