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E-Bodies Cuda & Challenger (sponsor: ROSEVILLE MOPARTS) => Cuda & Challenger General Discussion (ROSEVILLE MOPARTS) => Topic started by: 6bblgt on March 02, 2020, 01:07:22 PM

Title: largest rear 15" tire & wheel in a stock 'cuda wheel well?
Post by: 6bblgt on March 02, 2020, 01:07:22 PM
who has big 15" rear tires on their 'cuda?
what size & what backspace works inside a stock wheel well?
Title: Re: largest rear 15" tire & wheel in a stock 'cuda wheel well?
Post by: usraptor on March 02, 2020, 06:47:33 PM
Do a search on here. There are numerous posts on this topic, may even be a sticky.  Personally, when I bought my '70 'Cuda it had L60X15's on the stock rallye rims on the rear.  It now has 275X60X15 BF Goodrich TA radials on American Racing Torque thrust wheels on the rear 8" rims.  No rubbing issues.
Title: Re: largest rear 15" tire & wheel in a stock 'cuda wheel well?
Post by: mccannix on March 03, 2020, 02:39:23 PM
Agree with the L-60-15 Goodyear on a stock 15 x 7 rallye wheel.
Ran this for years with no problem.
Close, but no scrub issues.
Title: Re: largest rear 15" tire & wheel in a stock 'cuda wheel well?
Post by: Chryco Psycho on March 04, 2020, 08:50:43 PM
I got a 295 / 50 with less sidewall to fit in my Chall with the springs in stock location
with the spring offset in I bet you could get a 315 in there & it all depends what wheel size as the larger the wheel diameter the less the sidewall bulge
Title: Re: largest rear 15" tire & wheel in a stock 'cuda wheel well?
Post by: 6bblgt on March 06, 2020, 12:43:04 AM
a little "glitch" in the project - there's a B-body DANA60 in the 'cuda - without relocated or offset spring hangers/shackles (spring perches were moved)

it currently has 15x7.0" rallyes with 215/65/15s  :sorry: any wider tire hits the leaf springs  :rolleyes:
Title: Re: largest rear 15" tire & wheel in a stock 'cuda wheel well?
Post by: Wayne on March 06, 2020, 05:35:49 AM
Not mine, but I saved this info. for reference.  295's fit easily.  315-325 can fit with proper backspace and wheel width combinations.  Here is one example I have saved.  In my opinion though 325 is too big for a 10" wheel.  I would keep it around 315

"I have a 70 Cuda fitted with a B body Dana 60 and inboard spring kit. I have 325 50 Mickey Thompson's on 15x10 which were custom built with 5 inch backspace. Everything fits inside the fenderwell with no cutting."
Title: Re: largest rear 15" tire & wheel in a stock 'cuda wheel well?
Post by: xx88man on March 06, 2020, 05:55:18 AM
Quote from: 6bblgt on March 06, 2020, 12:43:04 AM
a little "glitch" in the project - there's a B-body DANA60 in the 'cuda - without relocated or offset spring hangers/shackles (spring perches were moved)

it currently has 15x7.0" rallyes with 215/65/15s  :sorry: any wider tire hits the leaf springs  :rolleyes:

I am curious because I plan on doing this in the future...... what is the reason you will rub with wider than 215? Is it wheel backspacing?
Title: Re: largest rear 15" tire & wheel in a stock 'cuda wheel well?
Post by: HP2 on March 06, 2020, 08:22:07 AM
The specific year of B body combined with wheel backspace and leaf spring location all produce a range of variables that prevent this for being a one size fits all combination, in spite of its popularity. Additionally, E body leafs are a splayed installation, so they are farther from the vehicle's center line at the shackle than they are at the hanger.

To only get a 215 in there means something or several somethings are not playing well together. A narrower B housing with the wider E spring location sounds like the worst possible combination and could really create limits.