dodgegtdart68
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I'm wondering what is the biggest rear tire I can mount on my factory 1968 Dodge Dart rim ???
Factory wheels
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autoxcuda
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does you car have original quarter panels?
has there been any collision repair to the rear quarters?
I have a 68 Dart with original quarters. I have 245/60/15 rims on custom small bolt pattern 15x7 4.25” backspacing with small bolt 8 3/4 rear and and axles. The ride height is low in the back. It is not jacked up.
The tires are very close to inner and outer quarters and will rub on real hard cornering. The tire is centered very good. My leaf spring bushings are bad and the spring is weak.
many reproduction quarter have a wider lip than factory and will hurt tire clearance. Also, if you have new large bolt axles they are a little thicker 1/4-3/8” and will push the tire out some.
13"
14"
4.5" wide
5.5" wide
Steel
Rally
We need just a little more info.
The tire manufacturer will dictate the widest tire for a given wheel width.
Now as for will a tire width fit in the wheel well, that's another question
volunteer
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I agree with tire manufacturer specs. But, be sure you measure rim width correctly - as 'bead to bead' - not overall physical width, which would measure as one inch wider. I have factory 5.5" Magnums on Challenger and went with 215 by 70 - (14") as they have just about 7.0" of tread. My Swinger, if ever on road, will have 6.0" argents but likely same tires. I like more stock appearances - keeping in mind that OEM tires of the day were significantly narrow - ie: E70 or F70 - 14" (bias). If O.P.'s factory rims less than 5.5" suggest bit wider.
69_340_GTS
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In a modern size tire it's going to be a 205/70R14 on the 14" wheels. I wouldn't even think about wasting my time/money if they are 13".
volunteer
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Demons, Dusters and Dart Sports seem to naturally 'crave' wider tires in rear, due to car's shape and stance. Just keep diameters equal if possible, and that would mean 70-series in front and 60's in rear. Swingers, Valiants and Scamps look better with all four wheels as same size; width and diameter (IMHO) - good also for those of us who like to rotate wheels. Putting 15" or taller wheels (on A-bodies) can lose any semblance to originality mighty quick - more often than not- (especially with SBP - 7/16" studs!)
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Dusters/Demons/Dart Sports can actually fit wider tires in the rear, the wheelhouses are actually bigger.
Equal diameters is a personal preference, and honestly most people prefer to have taller tires in the rear. Just look at any of the wheel and tire threads, most run a staggered set up with the rears taller.
"series" depends on the width, it literally means the percentage of the width that the sidewall height is. So throwing out 60 and 70 series without a width attached is misleading, because it may make the tire height a poor choice.
Any diameter wheel can look goofy if the tire size and ride height don't match everything else. You can make 15's look tiny with an elevated ride height and 18's look great if the stance is right.
And none of this is on topic. If the OP has factory wheels, the tire sizes available will be VERY limited if you pay any attention at all to the tire manufacturer's recommended sizes.
volunteer
Well-Known Member
Aren't these similar quotes? And, I do appreciate the criticism. After all, it's up to each owner as to his or her wheel preferences - especially if updated to larger bolt pattern. Purchasing much wider and/or taller wheels, as available, for the small bolt pattern, may not be wisest or safest choice. Stay safe.
My point was that larger wheels on those body styles don't just look better. They actually fit better, and they can fit a much larger wheel. Which means that if you don't have a Duster/Demon/Dart Sport (or Barracuda) you can't necessarily use what will fit in the back on one of those cars on a Dart, Scamp or Valiant. A 275 will fit with the stock spring locations on Duster/Demon/Dart Sport or Barracuda. You can't get a 275 on a Dart/Scamp/Valiant without at least a 1/2" spring offset or quarter modifications (and sometimes both).
volunteer
Well-Known Member
Respectfully, I am not trying to get into a urinating contest. What you are saying about rear wheel fitment, comparing the two different
A-body styles, is exactly what I have been saying - - that wider rear wheels and tires are better suited (physically and esthetically) to the 'fastback' style bodies. Of course wide rear wheels would look (and fit) stupidly on 'sedans'. Perhaps someone else can chime in and explain this to you. Yes, it is indeed 'off-topic' - as we await response from original poster as to what his factory wheel size is. Thanks again for your (virtual) 'boots on my ribs'.
Respectfully, I am not trying to get into a urinating contest. What you are saying about rear wheel fitment, comparing the two different
A-body styles, is exactly what I have been saying - - that wider rear wheels and tires are better suited (physically and esthetically) to the 'fastback' style bodies. Of course wide rear wheels would look (and fit) stupidly on 'sedans'. Perhaps someone else can chime in and explain this to you. Yes, it is indeed 'off-topic' - as we await response from original poster as to what his factory wheel size is. Thanks again for your (virtual) 'boots on my ribs'.
Yup, just gonna keep disagreeing. @toolmanmike's hardtop looks fantastic with 255/60/15's, and that's the biggest you can fit on a Dart without moving and modifying stuff. Not factory wheels obviously, they're 15x7's.
684door
Well-Known Member
My 68' Dart had a stock small bolt pattern 8.75 rear. I bought a 15x7 4.5" backspace steel wheel. It fit a 255/60 15 Mickey T Drag Radial. The section width of the Mickey T drag radials is not as wide a regular 255 tire. Just look at the spec on Summit website. I changed to a Dana 60 rear same width as my 8.75. I put stock 15x7 4.25 backspacing rear wheels with the Mickey T's. Fit perfect. No rubbing anywhere. Stock placement of springs.
dodgegtdart68
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K here goes. They are Ralley with a 5 1/2 " bead to bead and a 14"
rim
dodgegtdart68
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All original , NoDak car
dodgegtdart68
Well-Known Member
There 14". Thank you
dodgegtdart68
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I so it's a factory 14" rim. 5 1/2" bead to bead and a ralley
dodgegtdart68
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autoxcuda
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a 225/60/14 would be pretty big for that rim but will fit rear wheel well. Might look a little small to you in wheel well. Depends if the rear end is low or high.
dodgegtdart68
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Thank you
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