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Okay I have 245/45/20 on my ‘14 Rt wheels & i was wondering what’s the highest on tire size i can do? I was planning on doing 275/40 but idk if they’ll fit.
 

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2014 OEM were 20x8" 255/45/20 max as mentioned. Need 9" for 275/40/20.

A Guy
 

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Quite a few tire shops will refuse to mount a tire not recommended for a specific wheel width. I think you'd be hard pressed to get someone to mount a 275 on 8" wheels.
 

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2013 rt with stock chrome clad wheels. I have 275 40 20s on mine with no real problems. At full crank left or right the tire just tickles the sway bar.
 

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A 275/40/20 is going to be 28.66 inches tall and 10.83 inches wide and a 245/45/20 is 28.68 inches tall and 9.65 inches wide. That being said if you have a 9.5 to 10 inch wide wheel you should be fine to run a 275/40/20 tire
 

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The question you should ask is how wide are your wheels you have on the car and also consider if they will rub. I have 275/40's on my car and they have no rubbing issues so just make sure your wheel is wide enough
 

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This is mine, granted a 2017 RT SCAT PACK 20x10 275/40R indy 500 firehawks all around, no issues at all so far
 

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I know its a little different, but I'm running 20x 9.5 on the front, with 275/30/20.....and 20x10.5 on the back with 315/35/20......no issues at all.
 

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I have 275/40/20 fronts and 305/35/20 rears. The fronts rub just a tiny bit if I have the wheels turned all the way and the rears only rub if the tire pressure is a little low so I cut the rear fender liner just in case. Those tires are mounted on 20x9 fronts and 20x10.5 rear wheels.
 

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Hey guys, so I have a 2015 Rt with the 20" hyper black rims. I'm currently running OEM tires size 245/45/20. So if I want to increase the width on my tires what is the right size I can put on these rims?
 

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Those are 20x8 also, max recommended is also 255/45R20. Yes, people report 275 no problem, but I can only tell you max recommended.

A Guy
 

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Those are 20x8 also, max recommended is also 255/45R20. Yes, people report 275 no problem, but I can only tell you max recommended.

A Guy
Thanks for the quick response! Always helpful A Guy!

So the 255/45R20 would be the biggest recommended size, what are other people running in these 20 x 8 rims? Any issues?
 

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WRT 20 x 9.0 Matte Black Forged on a 2017 R/T Shaker STP

What is the max size tire I can put on this rim? 275/40/20??
Everyone on here running the 275/40's are running at least a 9.5 inch wide wheel mostly hellcat wheels or if you can find a 10 inch wide wheel. The 9 inch wide wheel is going to limit you and you can't run a 275/40 tire
 
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