rim ideas

[trapcentral]

I have a 98 explorer sport and I want to go 31 inch tires on 15x8 pro comp steel rims . my question would be about the back spacing and center bore. can anyone help . thanks in advance.

 

[RandomNerd2000]

I believe the lug spacing measurements are 5x 4.5, or 5x 114.3 (Same thing, first is SAE, second is Metric), offset is 8-20mm (I think, been wrong before, I know it's a good bit compared to Mustangs and later Explorers w/the same spacing), and the center bore is 70.6 mm.