SidewallerTire & wheel calculators

205/55R16 vs 225/45R17

225/45R17 is 0.4% taller (+0.09 in) and 0.79 in wider than 205/55R16.

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Close match

225/45R17 is 0.4% taller than 205/55R16. That is inside the ±3% most shops treat as a straight swap.

205/55R16225/45R17Change
Diameter24.88″24.97″+0.09″+0.4%
Width8.07″8.86″+0.79″+9.8%
Sidewall4.44″3.99″−0.45″−10.2%
Circumference78.2″78.5″+0.3″+0.4%
Wheel16″17″+1″
Revs per mile811808−3
SideTread
205/55R16225/45R17
Speedometer shows 60 mph60.2mph

Real speed on 225/45R17.

Ground clearance+0.05in

Change in height under the axle.

Width per side+0.39in

On the same wheel, split inboard and outboard.

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205/55R16 or 225/45R17?

Can I use 225/45R17 instead of 205/55R16?

225/45R17 is 0.4% taller than 205/55R16. That is inside the ±3% most shops treat as a straight swap. Also match or beat the original load index and speed rating, and check that the wheel width suits the new tire.

Will my speedometer be off?

At an indicated 60 mph on 225/45R17 you are really doing 60.2 mph if the speedometer was set up for 205/55R16. Going the other way, 205/55R16 would make it read 59.8 mph at a real 60.

How much ground clearance does it change?

Half the diameter difference: +0.05 in (+1 mm) under the axle.

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