wesmigletz

I'm about to order a set of 670 R 15 Bias Look Radials for my 57. I have a set of stock wheels and a set of 15x6" rims.

Would there be a benefit to the 6" rim vs the stock in terms of braking or handling? The car will be mainly driven, with occasional 1/4 mile use with a drag radial on back. Won't be doing any road course or autocross events.

Thanks in advance.

Wes

wmf62

Wes

from the Coker website:

Brand: Firestone
SKU: 568800
GTIN UPC: 00842199102956
Product Size: 670-15
Rim Diameter: 15
Tread Width: 4.50
Section Width (Actual): 7.01
Overall Diameter: 28.58
Max Load Capacity: 1450@32PSI
Recommended Rim Width: 4.50 - 5.00
Tube Type or Tubeless: Tubeless

if your tires mirror these cross-sectional and tread width specs, I see no value in a wider rim than the stock rims

Bill

wesmigletz

Thanks for the feedback Bill. The site I was looking at called for a 4.5-6.00" rim. I figured the benefit would be minimum, with a slightly shorter sidewall, but the wheels would be heavier. BTW, hope to get started on the MY6 swap this weekend.


https://www.cokertire.com/american-c...e-radials.html
Brand: American Classic
SKU: 700303
GTIN UPC: 00842199100778
DOT Approved: Yes
Product Size: 670R15
Rim Diameter: 15
Tread Width: 4.70
Section Width (Actual): 6.59
Overall Diameter: 28.24
Load Index: 93
Speed Rating: S
Max Load Capacity: 1450@35PSI
Recommended Rim Width: 4.50 - 6.00
Tube Type or Tubeless: Tubeless

wmf62

FWIW, I have 215x70x15 radials on 7" wheels on my 62 with no problems

the biggest potential problem with wheels is a combination of offset and tire sidewall cross sectional width that will cause the outside of the tire bulge to hit the wheel well lip. I have a 4.5" backspacing that gives me a finger's clearance between the leaf spring and the inner side of the tire. so, your 6" should be fine, dependent on backspacing...

good luck with the MY6, it should be a slam dunk. looking forward to hearing how it goes, let me know if I can help

Bill

DZAUTO

I have bone stock GM steel wheels (from Mid-70s cars) on the 56 with 225/75R15 tires on 15x6 front wheels and 15x7 rear wheels and 56 dogdish caps. ZERO issues.





15x6 wheels



15x7 wheels

wesmigletz

I just measured the back spacing of the 6" rims, and it is 4 1/4", so they should clear if I go with them.

wesmigletz

Hoping to get to it Sunday. My car is turning around 3200 at 60 MPH, and I'm looking forward to lowering the RPM. BTW, did you have to swap your yolk out?

wmf62

as "I" REMEMBER , no....; I don't remember changing a thing as it is a direct replacement for a Muncie, linkage will be the only problem....

you should be pleased with it, I'm was

Bill

wmf62

perfect...., especially with those tires

Bill