Here's my brochure. It's older than yours - mid 2008?
The reason the 45 series works on a 7" rim is because it does have an extra 1/4" of sidewall height. Because of the extra height/pivot length, it can balloon a bit more & therefore fits (just). I help run a website that used to have a lot of RB Liberty owners - it was a recurring question because the Libs had 7x18 with 225/45x18. This size is uncommon (and a Ferrari front size) & therefore expensive (not as bad now as it was a few years back).
Here's the specs on Michelin PS2 (but Goodyear F1A & other popular choices are the same). 225/40x18 at the top (recomended rim range 7.5"-9"); hunt down towards the middle for 225/45x18 (7"-8.5")....... doesn't make sense but that's how it works.
As I said, i'd remove a wheel & have a look just to make sure.
carandimage The place where Off-Topic is On-Topic
I used to think I was anal-retentive until I started getting involved in car forums
MY17 Superb 162TSI, Business Grey, Tech+Comfort Pack, APR ECU+TCU Stg 1, SLA, Rieger Splitter + Side Skirts, Eibach Pro-Kit Springs, Hardrace Swaybar, TPMS
rumour is the MY11 have gone down to 7x17![]()
carandimage The place where Off-Topic is On-Topic
I used to think I was anal-retentive until I started getting involved in car forums
I get really annoyed when car companies use obscure wheel widths. Mazda do it with pretty much every model, it makes tyres more expensive for no reason and quite often means you are really limited with choices as well.
MY17 Superb 162TSI, Business Grey, Tech+Comfort Pack, APR ECU+TCU Stg 1, SLA, Rieger Splitter + Side Skirts, Eibach Pro-Kit Springs, Hardrace Swaybar, TPMS
Yeah the next trick they learnt was to start selling and fitting tyres in about 2004, they made a market and then cashed in on it.
Could be worse, you could have bought a Renualt from the 80 s when the French were stupid enough to think that they could make "metric" wheels and Michelin was the only tyre manufactorer doing so, and could name their price for replacments.
2014 MY14 Corrida Red Elegance Wagon TDI
2009 MY10 Race Blue RS Wagon TSI 6 sp. manual. (Gone)
2011 MY12 Yeti 77 TSI DSG.
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