I rolled the wheel well lips on the 70 Fastback in my avatar picture. I have the wheel well lips rolled on my current Mustang. I ran 275/60/15 rear tires on the other 70 and the same on this car. If I don't roll the wheel well lips, it will cut the tires. I'm going to replace both rear quarters on my current car. So I'm going to need to roll both sides. Seeing as he's been playing with and drag racing Mustangs since the 60's and runs a body shop, I'm going to ask 428rustycj's opinion on this question.

 

How wide of wheels were you wanting to run? The Boss 9's I believe had the fenders rolled since the front wheels were moved 1" outward on each side. As for the quarters if your tires don't rub then I don't see any reason to do it unless you want to.

 

Thanks, Maxum! Yes, I too would be interested in Rusty's take on this.

multi68stang, the Boss 302 and Boss 429 had the fenders rolled to allow for wider tires up front. I have yet to buy any wheels or tires. I'd like to tuck the widest wheels and tires I can into the factory wheel wells. A 275/60, like Maxum is running, would be swell! Although, I'm thinking of going with 16s since it's getting harder find tires for smaller wheels. I've seen 16" Magnum 500s and they still look pretty close to the classic wheels. Once you get to 17", it starts looking a lot different.

 

Klutch,

Rolling rear fenders is a different kettle of fish than rolling the front. The welded, double thickness flange is a bit of a bear to form. However, it really is just as necessary on the rear with larger meats as it is on the front. Here is a piece I posted on my blog that might give you some ideas:

Night Mission Boss 302 Blog: Rear Wheel Tub Prep & Fender Lip Rolling

Hope this helps!

 

Klutch,

Rolling rear fenders is a different kettle of fish than rolling the front. The welded, double thickness flange is a bit of a bear to form. However, it really is just as necessary on the rear with larger meats as it is on the front. Here is a piece I posted on my blog that might give you some ideas:

Night Mission Boss 302 Blog: Rear Wheel Tub Prep & Fender Lip Rolling

Hope this helps!

Thanks so much, Sven. I've been following your Boss blog and I've learned a lot from you. Somehow I had missed the section on rolling the rear wheel tub.

 

I know I've seen a member get a 285/40R17 (11.75" wide tire) on a 10.5 wheel in the stock wheel wells (can't remember if he rolled the quarters of not). I'm trying to figure out how I can go with 315/35R17's on a 10.5 wheel out back without having to modify or delete the rear seat; rear interior panels, & frame rails.
I love my 17's but if I were going to go with a set of Magnum 500s then I wouldn't go bigger than 16's.

If it were me & if you don't plan on putting the trim pieces on the flares then I'd go ahead & roll em. As long as you take it slow & are careful not to dent/bend the flares then I don't see any down sides to rolling them. When it comes to the extra room sometimes on these cars even a 1/4" can make a huge difference in clearance.

 

consider getting the tire and rims you want to run and do a test fit. this will help you find and clear any issues now before it's painted (either the quarter lip or even possibly the inner wheelhouse).

it would be a shame to roll the lip and select a tire and rim combo that didn't need it.

 

consider getting the tire and rims you want to run and do a test fit. this will help you find and clear any issues now before it's painted (either the quarter lip or even possibly the inner wheelhouse).

it would be a shame to roll the lip and select a tire and rim combo that didn't need it.

Thanks Buckeye. I like your tire and wheel combo. But I thought it would be nice to have the option to go with something a little wider if I wanted.

Why would it be shame if I didn't need it? Is it because I'd be unnecessarily modifying the car?

 

Thank you Sven and Buckeye. I appreciate your input.

 

Well, if you're dealing with it with your current car, it seems the proper "pre-plan" would have to roll them before paint, to avoid any future problem. It's better to have too much clearance than too little. Remember, even if the tires originally fit, the width of replacement brands may vary.