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Discussion Starter · #1 ·
I finally got one mounted to check the fitment; 315/35x20 Michelin Pilot Sport 4S on a Factory Repro FR70 10 1/2" wide, 25MM offset. I have at least 1/4" on the RR and 3/8" on the LR. My tightest spot was 3 o'clock on the RR and 9 and 10 on the LR. I wanted the 315 since the diameter is closer to the front tires; 275/40x20. I bought some 6MM spacers, but doubt I will ever need them. I am happy!!!!!! Tires 1.jpg Tires 2.jpg Tires 3.jpg
 

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Discussion Starter · #3 ·
Yeah, I would think so. After reading dozens and dozens of posts, a lot were worried about the sectional width of the 4S being wider than other brands?
 

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2020 Challenger Hellcat Redeye NB
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I finally got one mounted to check the fitment; 315/35x20 Michelin Pilot Sport 4S on a Factory Repro FR70 10 1/2" wide, 25MM offset. I have at least 1/4" on the RR and 3/8" on the LR. My tightest spot was 3 o'clock on the RR and 9 and 10 on the LR. I wanted the 315 since the diameter is closer to the front tires; 275/40x20. I bought some 6MM spacers, but doubt I will ever need them. I am happy!!!!!! View attachment 571437 View attachment 571438 View attachment 571439
I'll be very curious to see how these handle a good bump in the road because that's way too close for comfort in my opinion.
 

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I finally got one mounted to check the fitment; 315/35x20 Michelin Pilot Sport 4S on a Factory Repro FR70 10 1/2" wide, 25MM offset. I have at least 1/4" on the RR and 3/8" on the LR. My tightest spot was 3 o'clock on the RR and 9 and 10 on the LR. I wanted the 315 since the diameter is closer to the front tires; 275/40x20. I bought some 6MM spacers, but doubt I will ever need them. I am happy!!!!!! View attachment 571437 View attachment 571438 View attachment 571439
With that level of tight fit, how does it work when you bind the suspension? Rubbing?
 

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Discussion Starter · #7 ·
No, that is the closest it will be. When it goes down or up, the gap opens up more. Secondly, if I worry anything it Knuckle Gap.jpg will be up front by this bolt! Stock tire and wheel, and the same on my 392 Charger.
 

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Challenger SRT Hellcat
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226 Posts
How are your 0-60 times with the 315 PS4s I’m literally doing that this week but was thinking of just going with the 305
 

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Discussion Starter · #9 ·
Still waiting to get the other mounted. When I went to the Firestone store, a clerk told me they use beads inside to balance the assembly..............I'm guessing that they will still spin from 0, but I'm hoping to get down to 40 for the dig.
 
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