The rules state that you can't go over 50 inches, that doesn't mean that you can't run the quad at 48. Your setup should do alright it just won't turn as well as a + 4 with 4-1 wheels. But if you've never ridden a + 4 then you'll more than likely love your + 3. Hope this helps.
Chase Cunningham #419
Owner of Morehead Motorsports
Media Allstars team member
08 GNC +25 National Champion
08 GNC 4-stroke A #4
06 GNC Open A #3
06 GNC +25 #2
04' GNC Open B #2
04' GNC Prod. B #10
00' GNC 250B #7
03' GNC MX Open B #6
03' GNC MX 4 stroke prod.
#12