Charger Wheels or any 18" wheels.... - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
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post #1 of 28 (permalink) Old 11-02-2012, 11:12 PM Thread Starter
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Charger Wheels or any 18" wheels....

I have a 2.7 Trep. With the Charger/Magnum R/T wheels what kind of mileage will I get? I know the rims are heavier than my stock 16" Momentums. I get about 26 mpg highway. What MPG will I get if I put the Charger wheels on? Can someone who's done this estimate? Also, my bolt pattern is 114.3 the Charger rims have a 115 bolt pattern. I know people have had success with Charger rims on LH cars but doesn't it weaken the hub studs over time? I want my car to look good but I don't wanna risk my life doing so.
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post #2 of 28 (permalink) Old 11-02-2012, 11:16 PM
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Not heard anyone have any issues with these wheels breaking studs or causing other issues. Can't speak to the mileage though.
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post #3 of 28 (permalink) Old 11-02-2012, 11:21 PM Thread Starter
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Not heard anyone have any issues with these wheels breaking studs or causing other issues. Can't speak to the mileage though.
The reason I ask is well.. I always do a little research before I make any potentially risky mods to my car. I've read on other forums about people having 114.3 stock bolt pattern and putting 115 bolt pattern rims on their car. And some have had GOOD experiences but other have had their studs bent/broken. I REALLY wanna get 18" Charger or Challenger wheels but I need to hear some feedback.
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post #4 of 28 (permalink) Old 11-02-2012, 11:36 PM
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They will fit "close enough" but, yes, you do risk breaking studs. I broke a couple on my first gen when I put 300C wheels on it years ago.
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post #5 of 28 (permalink) Old 11-02-2012, 11:47 PM Thread Starter
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They will fit "close enough" but, yes, you do risk breaking studs. I broke a couple on my first gen when I put 300C wheels on it years ago.
Ahhhh I drive 45-70mph where I live and it sounds preeeeetty risky to me.. I want those wheels bad and I can get 'em for dirt cheap but I don't want a stud to break when I'm going 65mph & crash. How many MPG did you lose?

Last edited by el_charal; 11-02-2012 at 11:50 PM.
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post #6 of 28 (permalink) Old 11-03-2012, 12:00 AM
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This was years ago. I don't think it affected fuel economy. Also, that's not how studs break off. They break when tightening them.
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post #7 of 28 (permalink) Old 11-03-2012, 12:13 AM Thread Starter
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This was years ago. I don't think it affected fuel economy. Also, that's not how studs break off. They break when tightening them.
Well the 18" wheels weigh more than the stock 16" wheels so wouldn't THAT affect MPG? My rims weigh about 22 lbs. I'm pretty sure the Charger rims are close to 30 lbs. 114.3 vs. 115 bolt pattern. That's .7mm difference per stud! Wouldn't that cause vibrations or weaken the studs since the rims won't be mounted dead-centered?
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post #8 of 28 (permalink) Old 11-03-2012, 02:55 AM
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Our rims mount hub centric, so no they will still be centered correctly. The concern is that the studs won't be perfectly centered in each hole, so the forces on them will be at an angle. It's a valid concern, but people have been running rims like that for years and years with no issues.
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post #9 of 28 (permalink) Old 11-03-2012, 04:32 AM
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Your math sucks.

The bolt pattern diameter is .0275" larger. The difference is only .014" off-center per stud... Not very much at all.
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post #10 of 28 (permalink) Old 11-03-2012, 09:47 AM
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Originally Posted by micholob View Post
Your math sucks.

The bolt pattern diameter is .0275" larger. The difference is only .014" off-center per stud... Not very much at all.
Where he was wrong was not dividing his 0.7mm by 2. If he'd have said 0.35mm off center, he'd have been correct - but, you are correct - that is 0.014"
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post #11 of 28 (permalink) Old 11-03-2012, 11:58 AM Thread Starter
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Originally Posted by micholob View Post
Your math sucks.

The bolt pattern diameter is .0275" larger. The difference is only .014" off-center per stud... Not very much at all.

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Where he was wrong was not dividing his 0.7mm by 2. If he'd have said 0.35mm off center, he'd have been correct - but, you are correct - that is 0.014"
My math does suck. Even more than a semen-slurping porn whore. But that's why I'm a part of this forum to learn from awesome people like you. Out of curiosity.. why is the .07 devided by 2? Don't get it & I would like to. Also can anyone speak on the MPGs lost when getting 18" rims?
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post #12 of 28 (permalink) Old 11-03-2012, 12:35 PM
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The total difference is .7 - but that is the diameter difference. Because there are studs on both sides of the center of the wheel, the difference is made up across both side so the center, so you have a difference in radius of half the total difference - .35mm


Notice - drawing NOT to scale.

Last edited by cdmccul; 11-03-2012 at 12:44 PM.
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post #13 of 28 (permalink) Old 11-03-2012, 12:54 PM Thread Starter
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The total difference is .7 - but that is the diameter difference. Because there are studs on both sides of the center of the wheel, the difference is made up across both side so the center, so you have a difference in radius of half the total difference - .35mm


Notice - drawing NOT to scale.
Got it... It always helps to see a visual. Your explanation makes perfect sense. Thanks! Learn something new everyday.
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post #14 of 28 (permalink) Old 11-03-2012, 12:57 PM Thread Starter
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Oh and would getting stock Charger lug nuts help AT ALL? As opposed to using my stock Trep lug nuts?
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post #15 of 28 (permalink) Old 11-03-2012, 03:35 PM
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Glad I know that there is a difference between the two bolt patterns. It makes me question my thought of bolting on the set of 17" stock Charger steelies I have.

I went from some stock Impala 16" wheels with some really cheap tires to some 18" Fondmetals with 10.5" wide performance tires. I can't speak to your exact situation but mine was a huge difference. The Fondmetals are almost each as heavy as 3 of my 16" wheels all assembled. My mileage suffered quite a bit. I went from just over 30 to about 24-25mpg mixed city/highway. For that, I was going to get some good tires on the Charger steel rims and sell the 18s.
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