Its time for some new threads for the c6 vette and i wanted to go a little wider in the back. Will a 305/30/19 fit in the back on a stock rim without fitment issues? If anybody has this size post up some pics so i can see how good they look :thumb: Thanks

 

How wide is the wheel?

http://www.discounttiredirect.com/di...TireMathNS.jsp

 

I believe the stock rim is 11" wide - seems the stock rear tires are 285's - 305's should fit - but a 12" wide rim may give you a better look. Maybe somebody will chime in w/pics.

~ its been so long, seems I forgot/misspoke...the stock rears are 19x10's...see pics below

 

Been said MANY times before.............
http://forums.corvetteforum.com/show...p?p=1564178504

 

~ your kidding right....topics already covered on this forum???? wow, who would of thunk it!

 

Why not go to a 325 on your stock rim? It doesn't have to stick out at all, and the traction is MUCH improved?

1. Widen wheel an inch.
2. Trim inner fender liner, and file off .020 of your upper A-Arm in one spot.
3. Put 325's out back.
4. ENJOY!







285 vs. 325:

 

The answers to you questions are yes & yes. So someone has done it & posted pics & best I can tell from the pics it will not stick out which was my biggest concern. Well, actually 2nd biggest, 1st is what will it do the AH/TC/ABS/Speedo etc., which was no. Michelin's PS2 305/30-19 was specifically was I was looking at, min. recs for rim width per Michelin are 10.5, but it will surely fit, & if you run slightly lower tire pressure, say 28 or less, my guess is you will avoid unnormal wear (wider tire small rim at spec pressure will wear center of tread, too little outer tread). Long story short, I have been researching this for a long time & I am comfortable with info to use this size. My other option is a BFG KDW2 295/35-19. My interest is the best straight line traction, that said the 295 is a taller tire, & the school of thought is taller tires, all else given equal, will provide better straight traction, because ultimately the provide a larger contact patch (ie the amount of rubber meeting the road surface). In practical terms, given the 2 options, the KDW2 is roughly 3/4 in taller, vs the 305 3/8 wider, so to measure the actual contact patch between the two is going to be pretty negligible, & tire compound probably would be a better indicator of traction which should go to the PS2s. Bottom line, the PS2s are going to a better handling, quieter, at the expense of tread life. The straight line acceleration is probably a tossup. Finally, the cost difference between is significant, $1000 vs $1600 for a set of 4. The final analysis, is yes they will work, w/o significant issue if any, but what are your goals. Define goals, you will get an answer.

 

you could go with 345's on 19x13's

 

Stock rims 8.5 x 18 front, 10 x 19 rear.

 

Love this idea, but given the only available option in a 325/30-19 is the Goodyear SCRF, your not gaining anything in traction, but it certainly will look awesome!

 

Hi Scottycards,

By the way, your set up is awesome dude. One question, did you widen your rims one inch all in the inside, that's correct? I saw that mod in another thread but your particular picture pretty much tells it all. We appreciate your effort in providing this information to us.

 

Fore58-

You are correct- the outer surface of my rim is in the stock location- the wheel was only widened on the inside.

Details here:
http://forums.corvetteforum.com/show....php?t=1860988

As for traction, I can only speak from my personal experience having had stock 285's and then the Supercar 325's. The traction increase is VAST. If others who have run the same setup back-to-back have noticed no increase in traction, I'll let them chime in.

 

Where'd you get the stock wheels widened at?

 

I got them from another forum member, Gotcha.

Weldcraft did the widening. The info is in the link.

I love the setup.

 

Forgive me, I am certain traction is significantly better than 285s, but compared to other non-runflats tires (ie. Michelin PS2s). This becomes an issue w/ any street tire if you mod the car, which I have, & am adding more power w/ a bare min 440 goal. At that point the 325s are traction limited, & their are better options traction wise. Again, the look you have achieved, IMO is as good as it gets! Job well done.

 

Not to slight your pic, this look is awesome! I assume though it's aftermarket wheels & the OP was looking for rubber on stock rims.

 

man your car looks sweet...the goals for the car is more staight line than anything..im making good power so ill probably be going with the 305/35/19 PS2..for the fronts is 275/40/18 borderline or would i be safer with say a 255/40/18? Thanks for all the help guys

 

With out going into a long dissertation (added unsprung weight, increased bumpster, etc.) it makes much more for the 255s up front especially given your goals.

 

A 305/30 is quite a bit smaller in diameter and doesn't look right IMO........I know 2 people that have done it, only to resell the tires because they didn't like the look either. There are no fitment issues though.

 

Ding, ding. We have a winner. Great observation. To go to a 30 aspect ratio, IMO the tread needs to be a bit wider to look right.