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The BMW Range
3 Series
F30, F34
Tyre brand and sizes on F30
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<blockquote data-quote="jason" data-source="post: 729466" data-attributes="member: 182"><p>The stock 397 is indeed 18x8. The 245/40R18 is only slightly shorter compared to stock. At the speedo, an indicated 110kph will be ~107kph on the GPS. So no big issues.</p><p></p><p>On the width dept, it is 2cm wider 245mm vs 225mm. Visually, the 245 is definitely looks wider. But more importantly to me, the 245's shoulder of the tire presets a more "square" cross section when mounted on 8in wide wheels compared to the rounder/stretched edge of the 225 tires.</p><p></p><p>However its arguable how much more effective contact patch you gain with the wider tires.</p></blockquote><p></p>
[QUOTE="jason, post: 729466, member: 182"] The stock 397 is indeed 18x8. The 245/40R18 is only slightly shorter compared to stock. At the speedo, an indicated 110kph will be ~107kph on the GPS. So no big issues. On the width dept, it is 2cm wider 245mm vs 225mm. Visually, the 245 is definitely looks wider. But more importantly to me, the 245's shoulder of the tire presets a more "square" cross section when mounted on 8in wide wheels compared to the rounder/stretched edge of the 225 tires. However its arguable how much more effective contact patch you gain with the wider tires. [/QUOTE]
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Tyre brand and sizes on F30
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