zigvs

whats the largest wheel/tire/offset combo that will fit on a 73 C3 with any modifications?

jb78L-82

I would assume that your 73 is very similar to my 78, I run SLP rims with 255/45/17's in front and 255/50/17's in the rear.

JohnRR

I have a '73 and am very interested in this post too. Wheel diameter, width, and backspacing would be very helpful.
Are spacer/adapters necessary?
Thanks,
John

3JsVette

Do a search in this forum and the the general C3 forum using "18s" there is hours of reading. It depends on what diameter wheels you want to use and how much you want to mod to get them on. What seems to "bolt on" with no drama is a 17 or 18 by 8 in the front with a 4" backspace and a 245/45 tire. In the rear a 18x9.5 with a 5" backspace and a 275/40-18 tire. Now there are many other combinations that will work and you need to be more specific on what you are looking for (15s - 17s - 18s - ect - ???) to get a more direct answer.

addballer696

on digital corvettes theirs one with 22 inch wheels. Looks ridiculous if you ask me.

zigvs

agreed about the 22's.I'm thinking of the 17's/18's combos.I don't want to modify the body at all but will do anything to the syspesion and frame since I will have it out the winter.

3JsVette

A lot of SHOCK value though.

3JsVette

Are you sure? Here's what one forum member did to get 18x10.5s with 295/35s on.
http://forums.corvetteforum.com/c3-t...clearance.html

It's a lot of work but the results speak for themselves.
http://forums.corvetteforum.com/c3-t...ls-are-on.html

That's a great result but do you want to go that far? You can get a 18x10 with a 5.5 backspace with a 275/40 tire with a lot less work and expense. Something to think about though.

86atc250r

Will an 18x9 work up front without modification on 5.25 BS?

Bee Jay

Here is a couple of pics. 295/35-18s on 10.5 x 18 Z06 wheels. Offset trailing arms, modified sway bar, trimmed frame.
Bee Jay

eagle275

damn, what happened to that vert? Was it on MTV's "Pimp My Ride"?

lethalassault

My car isnt a fav on here but I did HRE 595R 255/40/19's in the rear and 245/45/18's in the front Mich PS2's. I like the way it turned out but there are not many running 18+

Vette80regon

Stock... No

your stock brake calipers will probably not clear the wheel

MotorHead

I have 285/40/18's on the back of mine with no mods, 255/45/17's on the front

86atc250r

Why would the brake caliper become a problem (genuinely curious)?

In crawling under the car while on stands, it looked like the potential issue would be the inner back side of the tire at lock. However, in reality, I'm not sure the back inside edge would really be much further in since I'll be using a 245/45 --- and my test was with a 255/60 on a 15"

73jst4fun

Check one of my recent posts on this topic, I just recently switched TT II's from 16" fronts to 17" and in the rear from 17" to 18"....better tire selections in the 17" and 18" for fitment and gearing...

7T3C3TTZ07

This is what I would like to do. I'm curious about the bs on your TTII's. Others have posted using 275/40/18 with custom TTII 18x9.5 5.25"bs. I assume that you used a 9.5" wheel. I already have moved the ebrake bracket. I would prefer to use the 285/40/18 for the extra width and the 27" diameter on the rear.

holley505

there is a guy with 20 inch wheel. late 70s black vette

JohnRR

MotorHead said: I have 285/40/18's on the back of mine with no mods, 255/45/17's on the front. This is exactly the information I've been searching for!

Motorhead, can you tell us what back spacing you are using? What spacers/adaptors, if any, are you using?

Thanks everybody for all the great photos and information.
John

LFZ

Nice wheels.