when I bought the first Challenger R/T A5, I ordered the SRT replicas with the Nitto 420s while the car was in storage I decided to order the R/T M6 with options I wanted. I also bought all of the upgrades during the winter months of 08-09 we then installed everything when the M6 arrived at the dealership
as the power increased with other modifications I changed the tire and wheel combos for the application I ran TOYO's for a short while they road great on the highway but I was getting wheel hop from that tire, only time with the 420s was in wet weather. My next tires I ran were the NT05 loved them road very good and worked well on the street and not very good at the track, so I switched the rears to NT05r great for street use just okay in the rain but another fail at the track even at 16psi I would blow them off... all of these tires mentioned above were 20"
I changed rims again to a 22" USW wheel 22x9.5 & 22.10.5 tire of choice was the Vredestein tires 265/35/22 & 315/30/22 it's a summer high performance tire, it's a awesome tire on dry and wet very high quality, great ride, very good handling tire and it wears great except for the rears since I added the KB. I have a set of 20's I'll be running this summer for road course and to change it up, the tread design is unique and I'm curious to see how well they compare to the NT05.
IIRC, the replica 20x9 fronts have +20 offset, where as OEM SRT-8 20x9 wheels have +25.5mm offset. The SRT wheels sit 5.5mm further inboard and may rub with 275 width tires up front.
I'll have to ask my friend she has a 09 SRT with the same tire set-up running Pedders coil overs with her factory wheels... If I recall some people did have a rubbing issue when reversing and cutting the wheel all the way but that was over a couple of years ago.
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