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2018 Challenger R/T Scat Pack WK
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Welcome from Nor Cal Bay Area. Scat Packs are so much fun.

Looks like you have the Good Year RSA`s in 245/45R20. I highly recommend your first upgrade be better tires. The RSA`s are pretty good for handling on the street but have horrible lateral traction, they are terrible for hard launch or rolling under 25mph to WOT. Lots of wheel spin, especially in the rain (not just my experience). There are a lot of tires out there that are miles better than the RSA`s.

You can easily put 275/40R20 on 9" rims, they are a little over an in wider but the same height. There are a lot of great options in 275/40R20. That's what I did for winter, got a set of BF Goodrich G-force Comp-2's, just the rear for now. Huge difference in lateral traction. I will be upgrading for summer tires soon but haven't decided on what yet.
 
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