Weld wheel size?

[OrLackThereof]

I just sold my motorcycle, so I'm getting a transmission soon and will need some real traction to turn some good times..... I've got factory pony wheels...16x7, 4 lug. My first question is, what's the lug pattern? 4 x ____? And also...what's the biggest I can run with what backspacing? Basically...anybody who has 15 inch Welds on your GT hatch, what size are yours? I just need to know what wheels to order to fit back there.. The bigger the better...I'm shooting for sub 1.8 60's

Thanks

 

[OrLackThereof]

Just ordered all the parts today........

^^^Bump

 

[mustangjoe87]

lug pattern is 4 x 108mm you should be able to get 9 wide, but make sure if you are gettin slicks that you dont get them to big, i had 28x 10.50x 15 on 15x8 draglites and they rubbed everywhere. ground eefects, inner fender, quad shocks it was a mess