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Discussion Starter · #1 ·
What’s up guys, I need a little advice on new tires for my OEM Hellcat wheels 20x9.5. Currently I’m running 255/45/20 all around because these were on my stock wheels before I bought the hellcat ones so I didn’t want to spend the money just yet on new tires...Well, it’s time for new tires and I’m currently on BCracing coilovers and pretty low in the rear to the point that I had to roll my rear fenders cause my rear tires were rubbing when I hit bumps or hills on the road. Any suggestions on what tire size to get? I was thinking 255/40/20-265/35/20 in the front and 275/35/20-275/40/20-285/35/20 in the rears.....any help will be greatly appreciated
 

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It appears that the width and offset of those wheels really push them out towards the corners.

I suspect that 275/40x20 on the rear and 245/45x20 on the front will work well and not rub.
 

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Discussion Starter · #3 ·
Yeah i get you. You don’t think 245/45/20 in the front will be too stretched with the wider wheels and look kinda of small with more of a wheel gap? I kinda like the 255/45/20 look I just need a smaller profile. And the rear that’s what I heard to put but I’m scared that 40 profile will hit the fender.
 

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245/45 will look good on that wheel but the 255/45 will be a bit taller but not by much. The height of the 275/40 & 245/45 are so close to one another you can almost call them the same.
 

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275/40 and 245/45 are the same rolling diameter keeping your speedo accurate as well.
275/40 fit nicely on the front.
 

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If you've had to roll your guards because 255's were rubbing.... guess what's going to happen when you put anything wider on? ;) Including 275/40.
 

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Discussion Starter · #7 ·
Good point.....but now that I rolled the rear fenders I have a lot more room for wider tires...so what about 275/35 then ??? And front 245/45 for a staggered look or just 275/35 all around ..... I need help guys lol I need tires soon
 

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Check the revs per mile of each different profile because if you make the front and rear too much different you will run into other issues I believe. I'm not exactly sure how much leeway there is in that regard you'll need to research it.

I have staggered hellcat wheels, 9.5 front and 10.5 rear but I'm running 255/45 because I couldn't get 275/40 in Michelin Pilot Sport 4S. Different scenario tho because I don't have coilovers.
 

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Will 255/55 R20 fit my vehicle?? I currently have 245/45 R 20
Differences in the 255 vs. 245:

255 is 2.3" taller, almost 1/2" wider, has a 1.2" taller sidewall, a 7.4" larger circumference and turns about 54 revs less per mile.

As far as the revs/mile and overall height difference you'll have some speedometer error (7.4%) and if you are lowered more than 1.5" you may rub.

The width is not an issue.
 

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Looks very nice, I bet this would be an nice alternative for those who have alloy edition 300 as well.


It’s all about personal taste, right? I had 17’s before and I really don’t care for Chrome. It belongs on Harleys and old T Birds. Just my two cents but, Chrome is kind of reserved for grown men that didn’t get enough attention as kids. It has its place, just not on my car....that I have to clean.....and wax... and buff. I got enough to do already without chrome.
That’s where this “hematite” type colour scheme comes in. Tasteful upgrades gents, tasteful upgrades.


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