(Set Size1 to OEM Size)
|Speed||10 km/h||30 km/h||50 km/h||70 km/h||90 km/h||110 km/h||130 km/h||150 km/h|
<iframe name = "TireComparison Calculator" id="tirecalc" width=100% height=100% style="border:none;" src="https://tiresdoc.com/tire-size-calculator/?&frame=1">
See how the 235/50r18 tire size compares to the 245/40r20
Making a decision before buying the right tire size? Or maybe you want new aftermarket tires?
The comparison charts above represent detailed calculations of the difference in size between 235/50r18 and 245/40r20 tires.
The resulting calculations of tire diameter and width, sidewall height, circumference and rim diameter are provided in the form of comparison table and visual graphics to better convey the difference between 235/50r18 and 245/40r20 tire sizes.
On top of that, given the fact that 235/50r18 is the original equipment tire size, you may also emulate the difference between your actual speed and speedometer readings after installing the 245/40r20 tires. Chances are high that you will want to calibrate your speedometer!