Dunlop Winter 225/40 R18

Dunlop Winter is a winter tyre made in total of 66 sizes, ranging from R15 to R15 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 225/40 R18 is 40mm wider than the narrowest dimension (185) and 20mm narrower than the widest one (245). 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, Winter usually competes against UltraGrip Performance 3, which is a tyre from GoodYear with a rating of 95%, compared to 96% of the Dunlop in question. Latest test in 225/40 R18 was held by Autobild in 2025, where Winter received rating "Exemplary" and finished on the 2. place. It was tested on a BMW M135i.