Whos running 275/60r15. Having issues
- Thread starter Carlb87
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There are about 4 different widths for A-body rear axles depending on what you've got. Going by the wheel mounting surface width, or hub to hub-
The original SBP 8 3/4 is 57 1/8"
BBP axles in the original 8 3/4 housing gets you ~57 13/16"
The 73+ BBP 7.25 and 8.25" rear axles are 56 3/4"
And from what I understand, the pre-73 SBP 7.25 is different again, closer to the SBP 8 3/4. But I haven't had one to measure to confirm.
Most of the measurements are listed here An accurate 8 3/4" rear axle width list
Nothing wrong with spacers at all as long as you get good ones. I use billet spacers that have the holes drilled to fit the diameter of the studs being used, cast spacers with openings larger than the studs are not a good idea IMHO.
When you install them, you have to check some things to make sure they're properly installed. They have to sit FLAT on the hub/drum mounting surface. So make sure they're not hanging up on the center register or some kind of edge/ridge. And you have to check to make sure you have the proper thread engagement on your lug nuts. The thicker the spacer, the more likely it is that you'll need to install longer studs to get the proper thread engagement. It's nice if you can get a set that's hub centric to your wheels, but with the larger center register that Mopars use that's not usually easy to do. Most aftermarket wheels are lug centric anyway.
This set should fit, it has a 71.5mm center bore which should clear the factory center register. I haven't used this company before, the one I usually use doesn't make a 1/4" or 5/16" spacer unfortunately.
8MM = 1/4" 5X4.5 = 5X114.3MM JEEP GRAND CHEROKEE LIBERTY 71.5 WHEEL SPACERS 5LUG | eBay
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AJ/FormS
68 Formua-S fastback clone 367/A833/GVod/3.55s
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You forgot the lol; I fixed it for ya
DesertRat
Leading edge boomer
Not with 3.73:1 shur grip gearing, 0 to 80 mph in the blink of an eye.
Negative!
Now now, let’s keep it clean!
Besides, it truly depends on the lady being asked.
You're damn right. Plenty of ladies are into hotrodding (more than ever as far as I can tell) and they're just as crazy for big tires/optimal traction as any guy that you'll meet.
Wait...what were we talking about again?
Yet again, sir; your generosity with sharing your knowledge and experiences should be recognized and appreciated.
Um..how slowly do you blink? Any of us here running all 15" all season tires, regardless of size, probably aren't going to be running to 80mph in anything that's considered legitimately quick by 2018 standards.
AJ/FormS
68 Formua-S fastback clone 367/A833/GVod/3.55s
- Joined
- Jan 19, 2014
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- 24,906
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about 6 seconds,spinning all the way, with 3.55s, and BFG Comp T/A Drag Radials, in size 325/50-15s?
I need more tire............lol.
But I'm a streeter, set up for showing off, sliding,drifting, and hammering over speed bumps, and lighting up the tires at 40/50 mph.. 275s just kept spinning me around in circles with a touch too much throttle, and their sideways traction was not adequate, for anything.
295s mostly cured that. Now, if I miss the mark, I just put a little toe on the clutch, and prepare to steer as the car recovers by itself........ instead of careening off into the ditch, or spinning around 180*. My first gear is good to 45/50mph and first-over to 65, so it is set up to trap as well at 60mph, as can be expected with the stiff go-cart suspension.. The penalty is the 2.4plus 60 fts
The 275/60s aren't that bad in straightline work with a nicely timed vacuum secondary, and an automatic. With a 750DP and a manual trans, it is all too easy to over pedal them.
The 275/50s are a tad better in the turns, but a 750DP is too big for control..... And a VS is crap for controlled sliding.Why? mostly because at 28/30 mph, my engine with 3.09x3.55 is reving at peak torque, and when the secondaries "hit", the tires give up, and around I go, again. With a DP carb you can dial the power in and find the tire's limit.
As much as I love the TQ carb, I put it on the shelf.
I know stickier rubber would help, but yes,even I have a budget, and and two sets of sticky rubber in one summer is not in it. And I know that a traction-aid would trim my 60fts...... but at the expense of my sliding pleasure.
For me, the budget solution was narrowing the rear and fitting 295s.
I know, I know....... talk,talk,talk. My kids are the same way, I can't shut them up.
I need more tire............lol.
But I'm a streeter, set up for showing off, sliding,drifting, and hammering over speed bumps, and lighting up the tires at 40/50 mph.. 275s just kept spinning me around in circles with a touch too much throttle, and their sideways traction was not adequate, for anything.
295s mostly cured that. Now, if I miss the mark, I just put a little toe on the clutch, and prepare to steer as the car recovers by itself........ instead of careening off into the ditch, or spinning around 180*. My first gear is good to 45/50mph and first-over to 65, so it is set up to trap as well at 60mph, as can be expected with the stiff go-cart suspension.. The penalty is the 2.4plus 60 fts
The 275/60s aren't that bad in straightline work with a nicely timed vacuum secondary, and an automatic. With a 750DP and a manual trans, it is all too easy to over pedal them.
The 275/50s are a tad better in the turns, but a 750DP is too big for control..... And a VS is crap for controlled sliding.Why? mostly because at 28/30 mph, my engine with 3.09x3.55 is reving at peak torque, and when the secondaries "hit", the tires give up, and around I go, again. With a DP carb you can dial the power in and find the tire's limit.
As much as I love the TQ carb, I put it on the shelf.
I know stickier rubber would help, but yes,even I have a budget, and and two sets of sticky rubber in one summer is not in it. And I know that a traction-aid would trim my 60fts...... but at the expense of my sliding pleasure.
For me, the budget solution was narrowing the rear and fitting 295s.
I know, I know....... talk,talk,talk. My kids are the same way, I can't shut them up.
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La-Motor
Active Member
1968 Barracuda with factory 8.75 Rear running a 275/60-15 on a 15x8 with 4.5 BS...Have about .5 to each leaf spring.
You must be running large bolt axles and the larger brakes. Because if you had factory small bolt axles the 15 x 8 and 4.5 backing space would not work, those tires would be hitting the springs unless you had offset shackles. Factory year with the small bolt axles 15x8 and 4 1/8 backing space fits nice, thats what I run
La-Motor
Active Member
Nope...running factory SBP 8.75 with factory drum brakes and no spring perch mods or offset shackles. Mind you, this is on a 68 Barracuda...not a Duster
same thing
The only thing I can think of is the bulge on your tires is not that much.
La-Motor
Active Member
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