Max 17 inch tire size on a 69?
#1
Safety Car
Thread Starter
Max 17 inch tire size on a 69?
I recently got a 69 and am going to get 17 inch wheels and tires. If I get a 17 x 8 torque thrust 2 wheel, what is the max 17 inch tire size I can run without rubbing? I see posts about later years but is seems like the 69 may be tighter because it doesn't have flares. Is that the case?
#2
Melting Slicks
GW, I'm going to try to change your mind. From research when I was looking at wheels for my 69 I found that tire manufactures are loosing interest in the 17" sizes, due to the auto manufactures going to larger wheels. Purchasing wheels is a large expense that you only want to do once. I purchased 16's for my 6t8 some 20 odd years ago and I can not get tires for the rear wheels any more. Some of us here have discussed that will also happen to the 17's. I'm running 18x9 4.5 b/s on the front of my 69, stock suspension with 255/40 tires. The only modification needed to the rear suspension to run 9' with 4.5 b/s wheels is relocating the parking brake calbe mount. My spare is a standard Gr60x15 If you check Tire Racks web site they give all the specs for the tires, recommended rim width, diameters, etc, which I found very useful when choosing a tire size. A 26 to 27" diameter tire size is what just about all c3s are running, just match that to the recommended wheel width you decide on. There is a sticky above on wheel and tires, do your research and make an informed decision. T
#3
Melting Slicks
Don't know if this is the maximum that can be ran on a 69 but it is a very good handling tire and is 26.6" tall so it looks correct on a C3.
Michelin Pilot Sport PS2 size that came on Porsche Caymen so they should be around for a while longer. I ran them on a 76 for several years.
https://www.tirerack.com/tires/tires...S2N1&tab=Specs
Michelin Pilot Sport PS2 size that came on Porsche Caymen so they should be around for a while longer. I ran them on a 76 for several years.
https://www.tirerack.com/tires/tires...S2N1&tab=Specs
#4
Le Mans Master
I have 255/50/17 ZR's is the rear and 255/45/17 ZR's in the front on my very early 78 with zero rubbing using the SLP 17 ZR-1 style rims no longer made...My inner fenders were never modified or cut by GM for the OEM 255/60/15 rims/tires.
#5
Here you go 1969 with the wheels you are considering running 255/45x17
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#7
Team Owner
about 22 years ago I got a set of 17x9.5 rims off a '92 vette switch for style reasons many years ago to 89 vette rims....sale size...
using 2.5" VBP adapters, I have 275/50/17 in rear, having move the ebrake tab to behind the caliper....
255/50/17 front, limited the steering radius by building out the lower A arms rub blocks......
my car has the equivalent of late shark flares on it....built out another inch or so over stock '72......
using 2.5" VBP adapters, I have 275/50/17 in rear, having move the ebrake tab to behind the caliper....
255/50/17 front, limited the steering radius by building out the lower A arms rub blocks......
my car has the equivalent of late shark flares on it....built out another inch or so over stock '72......
#8
Safety Car
245 x45x17 rim width 9.5 2.25 " Adapters tires flush with wheel well.
No suspension changes.
No suspension changes.
Last edited by 69Vett; 03-02-2017 at 04:04 PM.
#9
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#13
Le Mans Master
Very Nice!!!
Personally I feel the 255/45/17 ZR tires are the best looking, handling, Steering responsiveness and comfort riding tire for the C3 with 17's. The key to the 17/18's is to reduce the bubble sidewall look and effect of the 15 in tires to achieve the noted advantages above. I have 255 /50/17 rears with 255/45/17's in front since with 3.70 gears and the 4 speed, I did not want to reduce the overall diameter of the tire, thus numerically increasing the rear gear ratio...it revs too high to begin with on the highway. Maybe someday if I go for a 5/6 speed OD tranny I could put the 255/45/17's all around.
Personally I feel the 255/45/17 ZR tires are the best looking, handling, Steering responsiveness and comfort riding tire for the C3 with 17's. The key to the 17/18's is to reduce the bubble sidewall look and effect of the 15 in tires to achieve the noted advantages above. I have 255 /50/17 rears with 255/45/17's in front since with 3.70 gears and the 4 speed, I did not want to reduce the overall diameter of the tire, thus numerically increasing the rear gear ratio...it revs too high to begin with on the highway. Maybe someday if I go for a 5/6 speed OD tranny I could put the 255/45/17's all around.
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