Looking for Guidance on GS Wheels

[70GS455V8]

I have a 70 GS that has WE code 14X6 rally wheels. I believe that they are original to the car which has the F7 code. From the threads I have read it looks as though everybody prefers the WG wheels. Why would I want to switch to WG 15X7 rally wheels? In addition, my car has standard drum brakes but I am seriously considering adding front disc brakes. I don't know if my wheels are correct to accept discs. Any and all ideas would be welcomed..

Thanks, Bob.

[buick64203]

Isnt F7 the 15" Rallyes?

Its up to you. If your car came factory with 14" rallyes and you like them, cool. The 15" chrome wheels in 1970 had a special offset to them. Later in the 1970 model year, they were coded "WG". They are very similar to other later year 15" chrome wheels and to a layman, they would look identical. The difference is slight. But guys with 1970 cars who want them to be 100% correct in their restorations, will get the correct offset wheels.

I think 15" Rallyes and G60 Polyglas tires on a GS look totally badass. But thats just me...

[LARRY70GS]

You have a lot more tire choices with 15" wheels. That is the best reason to switch.