GM Truck Club Forum banner

Tire Size Calculators

37460 Views 27 Replies 27 Participants Last post by  ghuns
Here are links to sites with tire size calculators.
Chart of vintage tire sizes: vintagecarconnection.com
Tire size comparator that indicates speedometer error: miata.net
Metric to standard & standard to metric conversion: redrock4x4.com
Speedo, tach, gear ratio calculator: onlineconversion.com

:biggrin:A very good tire comparison calculator: 1010tires.com
  • Like
Reactions: 2
1 - 20 of 28 Posts
thanks, i quoted and posted on our car club forums.
helpful link thanks
In a bind and don't have web but have a calculator.

for a 265-70R16

265 is width in mm (convert to inches by dividing 25.4) = 10.43
70 is the percentage of the width that is the side wall height (10.43 * .70) = 7.3
Diameter of the wheel + 2 sidewalls (7.3 * 2 + 16) gives the overall height. = 30.6
  • Like
Reactions: 1
Will use thanks.

Great web site will use it. Thanks.
thats reallly great info...could really use this in the future
Another Tire Calc

Here are links to sites with tire size calculators.
Chart of vintage tire sizes: vintagecarconnection.com
Tire size comparator that indicates speedometer error: miata.net
Metric to standard & standard to metric conversion: redrock4x4.com
Speedo, tach, gear ratio calculator: onlineconversion.com

:biggrin:A very good tire comparison calculator: 1010tires.com
http://www.rims-n-tires.com/info_specs.jsp
thank you man thats really cool and helpful
Red Rock 4x4 is no longer in business and has no information at the listed address.
Great Find. But. Heres the question? Will the computer have to be recaled? I just bought a 09 Sierra. Wanna go from 18's to 22's.
Here are links to sites with tire size calculators.
Chart of vintage tire sizes: vintagecarconnection.com
Tire size comparator that indicates speedometer error: miata.net
Metric to standard & standard to metric conversion: redrock4x4.com
Speedo, tach, gear ratio calculator: onlineconversion.com

:biggrin:A very good tire comparison calculator: 1010tires.com
heres another metric to standard and standard to metric calc i found since redrock is gone

http://www.dakota-truck.net/TIRECALC/tirecalc.html

just dont look at the top of the page....
Here is an assortment of calculators including a torque converter slippage calculator.
http://www.snoman.com/HTML/axlecalc_5a.html

Here is pretty technical gear ratio calculator.(requires a lot of inputs)
http://www.grimmjeeper.com/gears.html
ok so if my wheel measurements are 305/50 R20 what are they in inches? so i can put it in my programmer

---------- Post added at 05:05 PM ---------- Previous post was at 05:04 PM ----------

is it 32in???? for my question right above..
Great links just found out the stock tire size the other day is 245/75/16 the tires on the truck when i bought it 2 yrs ago (which i'm gettin ready to replace) are 235/85/16 tires . I'M RUNNING 4.1 % SLOWER W / the 235/85/16's .


glad to find out the stock size & the calculator cause maybe i can get some better gas milage now going back to the stock size.


Later yall

Mack
Thanks for the post. Great links
1 - 20 of 28 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top