Doublecoin DC100 is a summer tyre made in total of 16 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/40 R18 is 20mm wider than the narrowest dimension (205) and 30mm narrower than the widest one (255). This tyre profile of 40 means the sidewall height of the tyre is 40% of the tyre width (225mm), which results in 90mm sidewall height. In
225/40 R18, DC100 usually competes against
SportContact 7, which is a tyre from
Continental with a rating of 100%, compared to 0% of the
Doublecoin in question. Latest test in
225/40 R18 was held by ADAC in 2025, where DC100 received rating "Poor" and finished on the 18. place. It was tested on a
VW Golf.