Topic: C3 Tire Specs
in Forum: C3 Handling Components
Already a Member?
Click Here to Login
Not yet a Member?
Click Here to Register for Free!
Former Member
Send PM
Milwaukie, OR - USA
Joined: 10/19/2015
Posts: 71
Vette(s): '78 Silver Anniversary T Top coupe,58k orig miles.
THM350 auto, 350 L48, JBM headers,Oyster White interior,.as of Nov '15 in process of painting.
I have a 78 Silver Anniversary t top..Found the build sheet behind carpet passenger side behind carpeting..in poor condition.
Secured the original factory to dealer invoice and window sticker for the car from GM Archive folks.
Car came equipped with P255/60 R15 RWL tires, factory #8YQBS, window sticker option designated as #QBS.
I cannot tell that the fender wells have been trimmed back..the fender lips are there and continuous from front edges to rear edges down by the rocker panel aluminum chrome-black trims.
Rocker panel trim pieces are 65.25" long.
My rocker panels are in fine condition, but need repainting on the lower black portion.I looked at repacement rocker panels and one of the Corvette parts suppliers shows rocker panels that are two differing lengths for the C3.
The tires I replaced with are BFG P255/60 15 RWL..
They don't rub on the fenders..
I did notice a 2" wide vertical rubbed mark on the dirt-grease-oil of the FRAME where the tires have lightly made contact-rubbed in time past when steering is fully locked for a tight turn..
I've never locked the steering that tightly when driving or even at very slow speed myself.
Anyone else seen that rubbed mark on the frame?..Jim
SPONSOR AD:: (Our Sponsors help support C3VR)
20152515373r.jpg)
Jim - there was some discussion a few months back regarding some tight turn frame rubbing. I believe it all started with a question on tire size or front suspension steering stops, unfortunately I cannot find the post. There were a few people out there that noticed the rub or polish of the frame bolts on the backside of the front tires.
Personally my '73 has evidence of some polishing on the left side during a full lock left turns. Not sure if its me or the previous owner. I purchased the car with a set of Radial T/A 225/70-15's on it and have replaced them with a new set of the same size.
Your '78 looks like a nice car. Can you post some pics and give us some history ?? Or did I already miss that information somewhere ??
John Sigmund
valkman57@sbcglobal.net
NCRS Member 61302
NW NCRS Chapter Member
Duct tape is the new Black !!
Lifetime Member
I've got a new, 4 tire set of BFG's (RWL) P255/70R15 on order for my '82 (what the car was wearing when ordered).
However, I've got Cooper Cobra's on the '77 (P225/60R15). There is no manufactured date, so, I'm a bit concerned about the age of the tires (although there is plenty of tread and shows NO cracking or aging).
I'm contemplating taking the new BFG's ordered for the '82 and putting them on the '77.
Should I have any front fender clearance (turning) concerns for the '77?
vettejack said:
I've got a new, 4 tire set of BFG's (RWL) P255/70R15 on order for my '82 (what the car was wearing when ordered).
However, I've got Cooper Cobra's on the '77 (P225/60R15). There is no manufactured date, so, I'm a bit concerned about the age of the tires (although there is plenty of tread and shows NO cracking or aging).
I'm contemplating taking the new BFG's ordered for the '82 and putting them on the '77.
Should I have any front fender clearance (turning) concerns for the '77?
Jack, I believe the optional P255's on your '77 should have the same front clearance issues as '78 and '79 cars. Trimming the front and rear of the front fender well lip was reccomended by GM. However there are a number of people with P255's on their cars with no clearance issues. Assuming you are using stock wheels and your front suspension is in good shape you might be fine. Mount a pair on the front of your '77 and see if you have any issues. Check both tires with the wheels turned full right and full left and bounce the suspension up and down and look for tight spots. Let us know what you find.
|UPDATED|8/5/2016 10:17:48 AM (AZT)|/UPDATED|
John Sigmund
valkman57@sbcglobal.net
NCRS Member 61302
NW NCRS Chapter Member
Duct tape is the new Black !!
Former Member
Send PM
Canada
Joined: 7/13/2016
Posts: 11
Vette(s): 1972 Corvette Stingray Coupe, 350 Base engine, p/s, p/b, a/c, automatic. All as original other than someone repainted it a Bright Yellow. It was Sunflower Yellow originally. Drives great, a nice 20 footer.
Just a FYI, my '72 had BFG's P235/60R15's all around when purchased, no problems
and they look good.
http://www.c3vr.com/member_uploads/39101_39200/39182/DSC_00172018915875r.jpg
Espressomorning said:
Just a FYI, my '72 had BFG's P235/60R15's all around when purchased, no problems
and they look good.
That's what I have on my '72. Wish I had gone with 245/60's.
Limited Member
Send PM
Overland Park, KS - USA
Joined: 7/9/2003
Posts: 914
Vette(s): 1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day.
2023 Accelerate Yellow HTC Stingray
I think that the 82 and earlier years had 255/60-15 tires. 70 series tires might be too tall and have some serious rubbing issues. That's (255/60-15) what I have on mine with no issues.
1973 L-82 4 spd
I have BFG 235 60's on my '72, there has been some minor rubbing on the frame I guess by the previous owner but in the 4 years I have owned the car no problems. I also happen to like that the car sits lower..
in Forum: C3 Handling Components
SPONSOR AD: (Our Sponsors help support C3VR)