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Calculation of tire size 225/70 R16
2
2
5
/
7
0
R
1
6
225
Tire width
70
Profile height
R16
Tire diameter
441
RPM per km
225
mm
158
mm
721
mm
2266
mm
Enter size
225
/
70
R
16
New size
195
/
65
R
15
Calculate
inches
millimeter
Parameters Sizes
Diameter
721
mm
Width
225
mm
Circumference
2266
mm
Profile height
158
mm
RPM per km
441
Parameters Sizes
Old
New
Diameter,
mm
721
Width,
mm
225
Circumference,
mm
2266
Profile height,
mm
158
RPM per km
441
Clearance change,
mm
Result:
Speedometer reading (km/h)
Real speed (km/h)
Difference (km/h)
0
Sizes for comparison of tires 225/70 R16
R16
195/75 R16 -3.1%
205/75 R16 -1%
205/80 R16 +1.8%
215/70 R16 -1.9%
215/75 R16 +1.1%
215/80 R16 +4%
225/65 R16 -3.1%
225/75 R16 +3.2%
235/65 R16 -1.2%
235/70 R16 +1.9%
245/70 R16 +3.9%
255/65 R16 +2.4%
R15
-1
215/75 R15 -2.4%
225/70 R15 -3.5%
225/75 R15 -0.3%
235/70 R15 -1.5%
235/75 R15 +1.8%
255/70 R15 +2.4%
R17
+1
215/65 R17 -1.4%
225/60 R17 -2.6%
225/65 R17 +0.4%
225/70 R17 +3.6%
235/60 R17 -1%
235/65 R17 +2.2%
245/55 R17 -2.8%
245/65 R17 +4%
255/55 R17 -1.2%
255/60 R17 +2.4%
R18
+2
215/55 R18 -3.7%
225/55 R18 -2.2%
225/60 R18 +0.8%
225/65 R18 +4%
235/50 R18 -4%
235/55 R18 -0.7%
235/60 R18 +2.5%
245/50 R18 -2.6%
245/55 R18 +0.8%
255/55 R18 +2.4%
265/45 R18 -3.5%
225
Tire width 
70
Profile height 
R16
Tire diameter 
441
RPM per km