Can I swap 225/55 for 225/50 winter tyres on my 2016 Saloon?

[HenrikErlandsson]

Old: 225/55 17"
These: 225/50 17"

Dealer suggested to order 225/55 ones instead cos "it's a big car". I trust him, he's probably right, just wanted to know if I can use these slightly thinner ones. I'll get a better price and they're a better brand (Hankook).

[Drew]

You can play around with tyre sizes on this comparison calculator or I think the back of the handbook recommends suitable tyre sizes for winter tyres.

https://www.tacomaworld.com/tirecalc?tires=245-35r20-255-35r20

[HenrikErlandsson]

All right. I checked on wheel-size.com and gummihuset.se first. A third site also got the model right but not accurate enough to list all possible sizes.

So I checked the manual. You need the engine code, and that's tied to the chassis number. I'd taken some pictures of the stickers inside the doors and with vindecoderz.com I could get the engine code. This is the only site I recommend, the others were more interested in getting paid or showing history (which you can get from just the registration plate). But I can also get a confirmation from my Opel shop in the morning.

Manual says yes.