77 Chevy PU Backspace and Rim Size

[LBJ]

Going to be putting some new wheels and tires on the 77 Bonanza one day not too far out.

I want to get some basics before I start looking. What is the backspace for a 1/2 ton five lug wheel? What rim size would work on this truck with 18 inch aluminum Rallye Wheels? 9 inch? 10 inch? I believe the new Chevy bolt pattern will not interchange with the older ones (5 x 4.75" I think). Is this correct? I have to see what tire pattern (60's, 50's 45's, etc) will look good on the truck, too. It's a bit hard to visulize tire size and width. I have been on the site where you can make your own setup, but it's still hard to determine what will and will not rub on the frame before hand.

Right now, I am looking at Vintage Wheels 18 inch aluminum Rallye's. I like the look and they go with the era of the 77. Not cheap, but not off the dial either.

Thanks for the help.

LBJ

[slugish]

More info needed . Lowered or not . and tire size.

[LBJ]

Right now everything's stock, 15 inch wheels. I am going to go to 17 or 18 inch rims. Don't know about actual tire size yet. I may lower the front two inches. That's about it right now.

[slugish]

Iwould stick to 60 series tires (more meat) unless you were going to lower it more.

however I dont know if they make any 18 in 60 series tires..

IF YOU REALLY WANT TO GET AS MUCH TIRE AS POSSIBLE IN YOUR FENDER WELLS ,YOU COULD PUT LARGEST TIRES AVAILABLE IN THE 15 -16 IN RANGE WITH 4.5 IN B. S. ON REAR ON 10 IN RIMS

ON FRONT 8 IN RIMS WITH 5-5.5 IN B. S. / 255X 60 TIRES (NO LARGER)

ONLY SUGGESTIONS/ HOPE THIS HELPS /

MAYBE SOME OF THE OTHERS CAN CHIME IN

[LBJ]

Thanks, Slugish. I'll be looking at tire sizes too.