205/50R17 vs 205/55R17
205/55R17 is 3.2% taller (+0.81 in) and the same width than 205/50R17.
205/55R17 is 3.2% taller than 205/50R17. It often still fits, but expect a noticeable speedometer error and check clearance at full steering lock.
Real speed on 205/55R17.
Change in height under the axle.
On the same wheel, split inboard and outboard.
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205/50R17 or 205/55R17?
Can I use 205/55R17 instead of 205/50R17?
205/55R17 is 3.2% taller than 205/50R17. It often still fits, but expect a noticeable speedometer error and check clearance at full steering lock. 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 205/55R17 you are really doing 61.9 mph if the speedometer was set up for 205/50R17. Going the other way, 205/50R17 would make it read 58.1 mph at a real 60.
How much ground clearance does it change?
Half the diameter difference: +0.40 in (+10 mm) under the axle.