I am as stupid as they come when it comes to tires and wheels. I know engine stuff but not the wheels and all that goes with it. The allloy or whatever cheap stuff Dodge used on the oem 18" 2005 R/T wheels is coming off. I saw a nice tire wheel package online for a set of 20" rims and tires pulled from a new charger. Are those ok to put on my magnum? says for 2007 -2009 which we know the model ended in 08 and started in 05. The tires are 245/45/20 no idea if that keeps the ratio the same as the factory 18's and 225/60/18. They are nice rims and tires and would be about the same cost as replacing all my original rims and getting new tires..but the 20's look nicer.

any guidance would be greatly appreciated..thanks

 

Try this calculator - looks as if you are at 0.2mph difference @ 60mph
http://www.1010tires.com/TireSizeCal...bmit&reset=yes

 

Thanks I will check it out. You and I must be related. We have the same cars for the most part. I have 73 Charger SE, 1998 Dodge Ram, and the 2005 Magnum identical to yours (aside from the fact i took off the side mouldings on the Magnum to give it a better look, in my opinion).