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**jayoldschool** · 03-24-2013, 11:55 AM

Google the miata tire calculator. It will help with your tire sizes. However, a 225 70 15 should be about the same height as a 215 75 15. I'm in the exact same dilemma. I have a set of 225 70 15s, and a set of 235 75 15s to chose from. I like the taller ones for the truck to lower the highway RPM, but they are a bit fat for OEM wheels.

03-24-2013, 11:55 AM	#18
jayoldschool Moderator Join Date: Dec 2012 Location: ON, Canada Posts: 2,154	Re: The Official John Lee Jr Thread Google the miata tire calculator. It will help with your tire sizes. However, a 225 70 15 should be about the same height as a 215 75 15. I'm in the exact same dilemma. I have a set of 225 70 15s, and a set of 235 75 15s to chose from. I like the taller ones for the truck to lower the highway RPM, but they are a bit fat for OEM wheels.