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What size tires?

Started by THE STIG, February 23, 2010, 03:25:38 AM

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THE STIG

February 23, 2010, 03:25:38 AM
I just picked up a set of 15" slots on ebay for my 70, the rears are 8.5" wide with a 3 5/16 backspace and the fronts are 7.5" wide with a 3 3/4 backspace. So what is the widest I can safely go as far as tire size?

oldschool

#1
February 23, 2010, 08:52:44 AM
275/60  or maybe 295/60. i have 275/60 on both of my chargers.
1968 cuda formula S bb 4-sp                          1968 Charger R/T 500" 4-sp
1970 Charger 580" 4-sp
1970 Cuda Convertible 500" 4-sp
1970 Cuda Convertible 500" 4-sp
TOO MUCH HORSEPOWER, IS ALMOST ENOUGH!

THE STIG

#2
February 23, 2010, 03:07:00 PM
Quote from: oldschool on February 23, 2010, 08:52:44 AM
275/60  or maybe 295/60. i have 275/60 on both of my chargers.
Do you have any pictures of those?

oldschool

#3
February 23, 2010, 03:38:51 PM
a couple pics,with 275/60
1968 cuda formula S bb 4-sp                          1968 Charger R/T 500" 4-sp
1970 Charger 580" 4-sp
1970 Cuda Convertible 500" 4-sp
1970 Cuda Convertible 500" 4-sp
TOO MUCH HORSEPOWER, IS ALMOST ENOUGH!

GPULLER

#4
February 23, 2010, 03:59:08 PM
Quote from: oldschool on February 23, 2010, 08:52:44 AM
275/60  or maybe 295/60. i have 275/60 on both of my chargers.

Those poor tires don't have a chance with all that power your throwing at them!!!

terrible one

#5
February 23, 2010, 05:25:20 PM
With that backspacing Ill bet 275 will be your limit in the rear and even then it's close

oldschool

#6
February 23, 2010, 05:30:15 PM
Quote from: GPULLER on February 23, 2010, 03:59:08 PM
Quote from: oldschool on February 23, 2010, 08:52:44 AM
275/60  or maybe 295/60. i have 275/60 on both of my chargers.

Those poor tires don't have a chance with all that power your throwing at them!!!
yeah, i rape the hell out of tires.... :lol:
1968 cuda formula S bb 4-sp                          1968 Charger R/T 500" 4-sp
1970 Charger 580" 4-sp
1970 Cuda Convertible 500" 4-sp
1970 Cuda Convertible 500" 4-sp
TOO MUCH HORSEPOWER, IS ALMOST ENOUGH!

tan top

#7
February 23, 2010, 05:34:05 PM
Quote from: terrible one on February 23, 2010, 05:25:20 PM
With that backspacing Ill bet 275 will be your limit in the rear and even then it's close

yeah thats what i'm thinking also :scratchchin:  prolly be better off with a 255 tire , with that back space ,  :scratchchin: :Twocents: :popcrn:
Feel free to post any relevant picture you think we all might like to see in the threads below!

Charger Stuff 
http://www.dodgecharger.com/forum/index.php/topic,86777.0.html
Chargers in the background where you least expect them 
http://www.dodgecharger.com/forum/index.php/topic,97261.0.html
C500 & Daytonas & Superbirds
http://www.dodgecharger.com/forum/index.php/topic,95432.0.html
Interesting pictures & Stuff 
http://www.dodgecharger.com/forum/index.php/topic,109484.925.html
Old Dodge dealer photos wanted
 http://www.dodgecharger.com/forum/index.php/topic,120850.0.html

Musicman

#8
February 23, 2010, 06:24:06 PM
Quote from: THE STIG on February 23, 2010, 03:25:38 AM
I just picked up a set of 15" slots on ebay for my 70, the rears are 8.5" wide with a 3 5/16 backspace and the fronts are 7.5" wide with a 3 3/4 backspace. So what is the widest I can safely go as far as tire size?

Are these rims 8.5" front to back, or 8.5" on the inside (9.5" front to back) :popcrn:
I know... stupid question, but I have to ask anyway... leave no stone unturned and all that  :cheers:

THE STIG

#9
February 23, 2010, 10:01:29 PM
Quote from: Musicman on February 23, 2010, 06:24:06 PM
Quote from: THE STIG on February 23, 2010, 03:25:38 AM
I just picked up a set of 15" slots on ebay for my 70, the rears are 8.5" wide with a 3 5/16 backspace and the fronts are 7.5" wide with a 3 3/4 backspace. So what is the widest I can safely go as far as tire size?

Are these rims 8.5" front to back, or 8.5" on the inside (9.5" front to back) :popcrn:
I know... stupid question, but I have to ask anyway... leave no stone unturned and all that  :cheers:

8.5" on the inside

Musicman

#10
February 23, 2010, 10:44:15 PM
You'll have to take some measurements to see what you can actually fit in there, but just remember that the 3-5/16 backspace on your 8.5's is pushing your rim 1.5" closer to the lip of the wheel well.

THE STIG

#11
February 27, 2010, 08:03:53 PM
So I'm seeing alot of 255/60 and maybes for 275/60 in the rear, what about the fronts would 255 probly be the max?

oldcarnut

#12
February 27, 2010, 10:16:05 PM
Try this.  It may help you out.
http://vexer.com/68rt/wheelguide.html

Musicman

#13
February 28, 2010, 08:16:19 AM
That would be a cool little tool if you could adjust the red lines to match your actual wheel opening, to bad it doesn't...

According to that tool my tires won't fit, which they obviously do...

I still prefer the old method using a straight edge, a tape measure, and the available tire information.
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