.... As you can see by your chart, it is the same dimensions as the OEM tire, except that it's about 3/4 of an inch wider. ......
:hun: Isn't the stock rear tire size 225/50R15?? Which means that the text bolded above is the wrong way 'round. :sour:
As shown on the chart, the 205/55R15 tire is going to be a little taller in the sidewall/profile (ie 55% of the width vs 50% of the width) and a little
narrower than the stock tire, (cos 205mm is less than 225mm) but the taller profile teamed with an 'only just' narrower width all balances out to give what is effectively the same rolling dia/circumference.
The narrower width of the footprint can help improve wet road handling (there's not as much footprint
width to push or collect water in the tread grooves, so you get better grip on the road surface) but generally a smaller footprint will tend to mean faster wear - except in this case, the better quality & (even if just slightly) harder compound rubber in the a/mkt car tire than the crap that the Kenda is made of significantly overcomes that tendency, & the a/mkt car tire will almost always wear significantly longer & almost always grip & perform better than the Kenda crap too!! :thumbup:
When it comes to the Uniroyal 205/60R15 not fitting, it probably comes back to the fact that some manufacturers use the tire casing or carcass to decide on what nominal tire size to call that particular tire, while others use the casing plus tread to determine the nominal size. All that means is that you just can't rely on the 'nominal size' to work out if a tire fits, nor rely on the generic size comparison charts (like that one shown earlier) - they are just a guide or starting point, you really need to compare the
specific tire dimensions & specs, and even then, just like your tire bloke said, there can be (generally small) variances even between tires of the same brand, nominal size, tread pattern, & construction!! You hafta look very carefully at the
specific dimensions of any tire you want to try.
But as a general rule, dropping a size/step in width & going up just
one profile size step will work/fit, ie going from 225 to 205 width & from 50 profile to 55; in this case, going up two profile size/steps ie, 50 to 60, was obviously just a touch too much!! Still, it might work fine with another brand/tread pattern.... Shame that there is no mandated
standard way of specifying tire sizes that all tire manufacturers actually used....