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78SA
10-06-2016, 3:51pm
How much would it matter going from an 8.5" wheel width to an 8" wheel width? Found rims I like but they are 8" instead of 8.5" like my stock ones.
mrvette
10-06-2016, 4:11pm
IMO you want wider......I got lucky in that the P/O of my '72 had flared the fenders just right for a set of C4 17" rims which I put on there in '95.....

thing is to keep same wheel centerline so the suspension is not loaded one way or another.....I suspect that is the best solution involves something along a 17" wheel due to tire prices, and keep the rim about 9" wide or so....

trying to balance price and performance.....:dance::issues:
78SA
10-06-2016, 4:12pm
Wheel size would be the same. Tire size would be the same. Offset would be the same. Only difference appears to be the width of the tire.
78SA
10-06-2016, 4:15pm
I have a 2016 Camaro with the 18" wheels. I have the winter tires from the 2015 I had and they both use the same size tire, 245/50/18. I want to keep using my brand new tires and to be able to use my winter tires that have only been used 1 winter. The wheels I found are the closest to looking like the 20" RS wheels but in an 18".
snide
10-06-2016, 4:23pm
When I had my C5, I found a set of Halibrand wheels. They were narrower than the stock wheels. My tires fit the wheels without issue. The wheels looked killer on my car too.

:cheers:
WalkerInTN
10-06-2016, 4:29pm
You'll be fine running that size tire on an 8" wide wheel. :yesnod:

My '96 Impala SS came OEM equipped with a 255/50 on an 8.5" wheel.
Kerrmudgeon
10-06-2016, 7:56pm
No difference, use the 8s. The ONLY time it would make a difference would be at the extremes of tire width range recommended for the wheel width. :thumbs:
Dave
10-07-2016, 7:49am
You will see less cornering stiffness in the tire on the narrower wheel. i.e. you won't have as much grip, and the steering will be a little less responsive.

You need to make sure the offsets (backspacing) puts the narrower wheel at the right spot, too.
Mike Mercury
10-07-2016, 10:26am
You will see less cornering stiffness in the tire on the narrower wheel. i.e. you won't have as much grip, and the steering will be a little less responsive.


is all this noticeable when driving to Walmart and back ?




:)
WalkerInTN
10-07-2016, 2:36pm
is all this noticeable when driving to Walmart and back ?

:)
It's not the destination, it's the journey. :drivingskid:

But no, it wouldn't be. Especially with winter tires. :cert:
78SA
10-07-2016, 5:52pm
You will see less cornering stiffness in the tire on the narrower wheel. i.e. you won't have as much grip, and the steering will be a little less responsive.

You need to make sure the offsets (backspacing) puts the narrower wheel at the right spot, too.

How much less? Offsets are supposed to be 32 on both.
Dave
10-07-2016, 9:29pm
How much less? Offsets are supposed to be 32 on both.

Without knowing the tire, I'll peg the difference at a few percent. Probably nothing that you'll notice on a C3.

The difference in widths with the same offset means you'll be bringing the outer face of the wheel (not the tire) in by 1/4" (but the rubber stays the same). Overall, it's probably not a significant difference for a '78
78SA
10-08-2016, 8:21am
Without knowing the tire, I'll peg the difference at a few percent. Probably nothing that you'll notice on a C3.

The difference in widths with the same offset means you'll be bringing the outer face of the wheel (not the tire) in by 1/4" (but the rubber stays the same). Overall, it's probably not a significant difference for a '78

2016 Camaro, Goodyear Eagle Sport, 245/50/18