I know this topic has been discussed before but does everyone with a manual agree that the Bias Ply is the way to go? I purchased used MT ET Streets last season on a 15" wheel and I'm just not sure if the tires were shot or what but I couldn't get off the line to save my life. My car makes mid 600s to the wheels on a single turbo setup. I'm launching off the two-step and just roasting the tires off every time no matter what I do with the tire pressure or RPM that I launch at. So I'm looking for a fresh set of tires for the 2018 drag season. I currently have 325/50/15 MT ET Streets. I see that the ET Street R's only come in 26 x 10.5R15, 28 x 11.5R15, 31 x 16.5R15, and 32 x 17.5-15 in the Bias-Ply. Which size do people here go with on a 15" wheel? Thanks for the help, looking to improve my 1/4 mile times this season. Also if anyone else has a turbo setup I'd love to hear your tire pressures and launching RPMs.