Remember Formula - A x B / 24.5 * 2 + R = Answer in inches. Run up "Calculator" and do these for practice!

1. You have a tire whose specs are p195/75R14. What is the diameter of the tire?

(A = 195mm, B = . 75 and R = 14 inches)

25.94 inches

25.74 inches

25.54 inches

25.24 inches

2.You have a tire whose specs are p155/80R13. What is the diameter of the tire?

(A = 155 mm, B = . 80 and R = 13 inches)

24.12 inches

24.3 inches

23.54 inches

23.12 inches

 

3. You have a tire whose specs are p205/65R15. What is the diamter of the tire?

(A = 205mm, B = . 65 and R = 15 inches)

25.28inches

25.90 inches

25.88 inches

25.30 inches

 

4.You have a tire whose specs are p175/70/R13 What is the diameter of the tire?

(A = 175mm, B = . 70 and R = 13 inches)

25. inches

24. inches

22. inches

23. inches

5. You have a tire whose specs are p175/70/R13 What is the diameter of the tire?

(A = 225mm, B = . 60 and R = 16 inches)

 

28.02 inches

27.02 inches

26.02 inches

27.22 inches

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