BADASS of New England

An automobile club for the enthusiast who enjoys the last of the big GM cars. The rear wheel drive B and D bodys. Chevrolet Impala SS, Caprice, 9C1, Buick Roadmaster, Oldsmobile Custom Cruiser, Cadillac Fleetwood
HomeHome  RegisterRegister  Log in  
Log in
Log in automatically: 
:: I forgot my password
Who is online?
In total there are 2 users online :: 0 Registered, 0 Hidden and 2 Guests


Most users ever online was 132 on Wed Oct 04, 2017 3:26 pm
Latest topics
» 1980 coupe DeVille for sale
Thu Dec 07, 2017 6:20 pm by IMPALADAKID

» Stock radio wanted
Sun Nov 26, 2017 8:07 pm by silverfox103

» 96 SS console, shifter, cable, brackets
Mon Nov 20, 2017 4:01 pm by No Moa

» Lots of 77-79 B-body Parts New and Used
Mon Nov 06, 2017 3:08 pm by Rossj

» Pictures from the 2017 Roundup
Wed Oct 18, 2017 9:00 pm by Big Wagon Guy

» Brake line size help
Sun Oct 15, 2017 9:08 pm by 1984twodoor

» Surprise Surprise!
Sun Oct 15, 2017 8:17 pm by Big Wagon Guy

» 1980 Coupe De Ville
Sat Oct 14, 2017 8:55 pm by IMPALADAKID

» 2017 10th Annual Roundup, List of Attendees
Sat Oct 14, 2017 8:42 am by Big Wagon Guy


Display results as :
Rechercher Advanced Search
December 2017

Share | 

 Determining wheel size

View previous topic View next topic Go down 


Posts : 2301
Join date : 2009-02-22
Age : 36
Location : Mansfield, Ma

PostSubject: Determining wheel size   Wed Sep 23, 2009 1:10 am

Is there a way that anyone has come up with to determine if a wheel is 15x7 or 15x8 when there's a tire already mounted? I know how to measure the rim when it's bare but once a tire is in place I don't know the best way to get a tape across the bead to get and accurite measurement. I figure someone must know a good trick to use.
Back to top Go down
Club President

Posts : 6878
Join date : 2009-01-20
Age : 41
Location : East Hampstead, NH USA

PostSubject: Re: Determining wheel size   Wed Sep 23, 2009 6:11 pm

Best I can suggest is to put a straightedge of sorts on the face of the wheel and measure to the deepest part of the center of the wheel, then do the same in the back, and then measure the thickness of the rim between the front and rear faces (where the lugs are) and then add it all together...

I dunno if that makes sense, but it's what I'd do. Wink

Bill "The Verb" Crovo - Resident Car Slut & Unicorn Hunter

A Toasted Marshmallow, A Long German, A Lame Suburban and expensive dreams...
Missing all my previous B's, D's and V... Sad
American Ricer
"Ooooh! Look! Something shiny!"

LOWER IT!!! Wink
Back to top Go down


Posts : 4287
Join date : 2009-03-20
Location : Revere, MA

PostSubject: Re: Determining wheel size   Thu Sep 24, 2009 12:29 pm

Drive by your local tire shop, they have the tool


96BBB 28K 3.42 Bolt-ons
95BBB 100K 3.73 383 New DD...already broke fixt the 4L60E twice
95 Black WB4
96 Black WB4 No holes in this
95BBB 189K 3.08 Old DD Matt. Cool
Whine..eee...Silver LS6
Back to top Go down


Posts : 2301
Join date : 2009-02-22
Age : 36
Location : Mansfield, Ma

PostSubject: Re: Determining wheel size   Mon Sep 28, 2009 5:15 pm

I've managed to find tons of info on ss wheels but I'm not finding much on n97's. I need to know the backspacing/offset so I know what I can get away with when I switch out wheels next spring. I know that they're 15x7 but that's about all I know.

I'm also going on the idea that the 9c1 rear is 1" narrower than the 7.5" drum setup that I currently have. So by my logic when I swap rears I can run 1/2" less backspacing and still have the wheel in the same position as my current setup.

Just for those curious I'm looking at running some 15x7s in the front with a -6 offset and 15x10's out back with -44 offset (both with 3.75" backspacing)
Back to top Go down
Sponsored content

PostSubject: Re: Determining wheel size   

Back to top Go down
Determining wheel size
View previous topic View next topic Back to top 
Page 1 of 1
 Similar topics
» Burrell DCC KIT 2
» tire size question???????
» Wheel rivets..
» Max tire size on 15x8 wheels?
» 4.5" Short Wheel Base Foden & 4.5" Foden Artic

Permissions in this forum:You cannot reply to topics in this forum
BADASS of New England :: 91-96 B & D-body tech :: Problems / Maintenance-
Jump to: