ZR2 s10's are around 62" Not sure if that is the widest but it is wide. They have 30-spline 8.5" 10-bolts with 3.73 gears, a gov-lock diff, and disc brakes.
The GM trucks in 2 wheel drive come with a bolt pattern of 5 on 5 inch.
The B-bodies Caprice, Impala, Delta 88 and similar "FULL SIZE" cars come equipped with the widest car axles and also come with either 5 on 4.75 OR 5 on 5 inch bolt patterns.
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