Makesure yours is on the correct setting. Put more air in or out if you need to, either using your own air compressor or by going to your local garage. Re-check your pressure with Listof tyre pressures for the Mercedes-Benz C-Class. Engine. Tyre size. Front pressure. Rear pressure. Front loaded pressure. Rear loaded pressure. 1.8 C 180 K. 195 60 R16 89V. Top3 Yokohama Advan Sport V103 Reviews. Given 87% while driving a Volkswagen Golf 6 GTI (225/45 R17) on a combination of roads for 10,000 spirited miles. Comfortable, good grip, good wear. Helpful 145 - tyre reviewed on January 5, 2016. Given 97% while driving a SEAT LEON 1.8TSI (225/45 R17 W) on a combination of roads for Inflatethe tyres with low pressure to a level that is equal to the recommended cold pressure plus the difference at the higher temperature. In this example, add 20 kpa in the right rear tyre to match the other rear tyre’s warm reading. When the tyre returns to cold pressure, it should end up at the recommended pressure. 2018Ace 235/45 R18 Summer Tyre Test - 8th of 11 tyres. View Full Test >> 225/45 R18 91Y XL AR: C: B: 70: driving on a flat tire. even though they were already pumped more then the PS2s and porsches user manual requres. lower pressure made it worse and highier pressure somehow made a bit of a difference, Im running 245/45/18 tyres, currently pumped up by the dealer to 31 on each corner. That seems a bit low as I had 33psi on the 17's on my old Vectra. Even driving for many miles at motorway speed will nudge tyre pressure up by a couple of PSI as the tyres warm up, especially the front tyres, so it's best to set tyre pressures before a long Listof tyre pressures for the Audi A4. Engine. Tyre size. Front pressure. Rear pressure. Front loaded pressure. Rear loaded pressure. 1.8 TFSI. 205 60 R16 92V. Popular225/45R18. TYRES (2254518) Below are the most common 225/45R18 tyres available. 225/45R18 tyres were common factory fitments on vehicles such as the Mercedes-Benz C-Class, Mazda 6 and BMW 3 Series. The tyres below are available from your local Tyrepower expert. If you’re not sure about what tyres are best for your car, Knc9yF.