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Old Jun 17th, 2021, 11:05   #11
Laird Scooby
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Last Online: May 5th, 2024 23:33
Join Date: May 2012
Location: Lakenheath
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Quote:
Originally Posted by Tissot123 View Post
225/45/17 are not specified as an option, and 235 on 7" rim is probably too wide . Insurance isn't a problem here.
I was having a brain-fart last night and think i typed the wrong size which i intended to be 215/45/17 but that is roughly equivalent to the two smaller tyre sizes i quoted after.

Checking the Owners Manual for a 2010 V70 on pgs 262/263, the original tyre is 225/50/17 and Volvo list an option of 245/45/17 which would be a tight squeeze on a 7J rim.

With that in mind, i'd be inclined to take a big deep breath and pay the extra for the 225/50/17 tyres.

That 3.5% difference might not sound much, however at 100kmh your speedo will read at least 103.5kmh, if not more if it already reads fast. In mph, that would be showing 65mph at 62mph.
The other thing is most tyre companies recommend a maximum difference of 2% diameter when changing tyre sizes to minimise the speedo error. With the comments from Clan about the software and so on, i'd definitely stick with the standard size. Chances are it would work fine except for the speedo error but if it doesn't it could prove to be an expensive cost-saving of fitting cheaper tyres!
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Dave

Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........
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