Tire size chart

Leroy · Aug 18, 2022

I used to be able to find good tire size charts for cars-light trucks but they seem to be gone. I am looking for something that will give me diameter and rolling circumphress and + or - in speed for different sizes. The orignal size was 237-75x15 and converting either a 215-75x16 or 235-70x16 and wanting to find either speed ingrease or decreas to the different sizes, Also to difference to 245-75x16 on other truck. If I need to grab a tirs from one for other for a spare. All sites I am finding just want tofocus on with of tire or speed ratings that I am not interestred in. I don't need the increae intowing power the smaller tires gave me now. Just size compatible for used tires not new and difference in speedometer reading.

cjunrau · Aug 18, 2022

https://tiresize.com/calculator/

Try this

Leroy · Aug 19, 2022

Thanks, I got what I was looking for. Going from 215-75-15 to 235-70-16 will change my speedometer reding about 2 MPH faster, not enought to make a problem. And if I can find a good 235-75-15 to use my 15 wheels for a spair with the 235-70-16 tires close enough in diameter to not hurt anything. The 2003 Dakota 4x4 has 245-75x16 tires and I have 5 of those so I do have a spare for it. The 2001 Dakota is only 2 wheel drive and I now have 4 235-70-16 tires for it but no extra 16 rims but I could use a 235-75-15 for a spare without problems due to diameter. So now all I have to find is one 235-75-15 for the spare and I will be good. In a pinch I could use the spare from the 03 on the 01 without too many problems. Good used tires are hard to find and I cannot afford new and I probably will never wear out these used tires The 03 has over 300,000 miles and is verry rusty, o1 is a lot better with way less miles. And I never use interstates and try to limit my speed ti 55MPH.

Tire size chart

Leroy

Well-known Member

cjunrau

Well-known Member

Leroy

Well-known Member

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