Does anyone know the lug pattern for a 71' cutlass?

 

Or measurments for the pattern?

 

It's 5 on 4 3/4 (5 lugs on a 4 3/4" spacing) which is the same for GM midsized for many years through the 1960's, 1970's into the 1980's and probably more. John

 

All 1964-1988 GM RWD A/G body cars used the 5 x 4.75" bolt circle. Others using the same pattern were F-body (Camaro/Firebird), X-body (Nova and clones), Corvette, and some B-body cars (60s Impalas, 64-66 Jetstar 88, and some 77-90 B-body sedans).

 

As well as the S-10/T-10 trucks and blazers
S=2WD
T=4WD