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**Gregski** · 10-10-2021, 10:29 AM

Alright folks, time to do some tire size math

our new rims are 17x8" so first 8" is 203 millimeters (that gives us a reference)

second 215 is the minimum tire width recommended for an 8" rim

third our stock wheels are 235/75R15 which computes to a 28.9" diameter so essentially we are currently running 29" wheels

if we were to keep the same wheel height we would need to get a 215/70R17 set of tires which is an odd size and not very popular therefor expensive

so we step it down a notch to a 215/65R17 tire size which ends up being a 28" tall wheel and so be it, there is a huge selection of tires in this size

GOOD YEAR
ASSURANCE FINESSE - SIZE: 215/65R17
Passenger All-Season

10-10-2021, 10:29 AM	#160
Gregski Post Whore Join Date: Aug 2014 Location: Sacramento, CA Posts: 10,814	Re: My Dusty 71 GMC a Mother & Son Project Alright folks, time to do some tire size math our new rims are 17x8" so first 8" is 203 millimeters (that gives us a reference) second 215 is the minimum tire width recommended for an 8" rim third our stock wheels are 235/75R15 which computes to a 28.9" diameter so essentially we are currently running 29" wheels if we were to keep the same wheel height we would need to get a 215/70R17 set of tires which is an odd size and not very popular therefor expensive so we step it down a notch to a 215/65R17 tire size which ends up being a 28" tall wheel and so be it, there is a huge selection of tires in this size GOOD YEAR ASSURANCE FINESSE - SIZE: 215/65R17 Passenger All-Season Attached Images Last edited by Gregski; 10-10-2021 at 01:44 PM.