Calchy.
Automotive - tire size

What is the difference between 235/35R19 and 245/35R19 tires?

Answer
+7.0
mm overall diameter
654.1 mm − 647.1 mm = 7.0 mm (1.08%)
How we got there
  1. 01235/35R19: sidewall 82.3 mm, total diameter 647.1 mm
  2. 02245/35R19: sidewall 85.8 mm, total diameter 654.1 mm
  3. 03Difference: 7.0 mm (1.08% — speedometer error in same direction)
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