Wheels/Tyres: - downsize?

tompip · Mar 25th, 2013, 21:44

hi , i currently have 20 inch rims on my XC 60, if i want to downsize to 18 inch rims, is it just a straight forward process as taking the 20 inch ones off and putting the 18 inch ones on or is there something else involved....

StockholmSyndrome · Mar 25th, 2013, 21:58

Use an online tyre calculator to work out what tyre size you'll need to compensate for downsizing rim size.

Get in touch with a volvo dealer to make sure your trim level of XC60 can take 18" wheels over it's brakes

Bill_56 · Mar 25th, 2013, 23:57

Even in you establish that smaller wheels will fit, be wary of aftermarket wheel sellers. Many may advise that as long as the bolt hoes line up all is OK, or that a spigot ring will correct any variations (it won't). Some companies appear to either not understand the subtleties of centre bore and offset, others may depend on the premise that the customer won't understand, and pulling the wool over their customers' eyes.

Pay no attention at all to the various online 'equivalent' wheel size databases, to which many wheel sellers link. They nearly all had blatant errors last I looked, at least for Volvos.

Safesat bet is to buy original Volvo wheels, expensive as it may be. Or stick with what you have.

Marty Dolomite · Mar 26th, 2013, 02:04

^^^^^ Wot they said.
You will need to work out what profile tyres to fit to keep the overall size the same or recalibrate the speedo to allow for the different size.
Also if that car doesn't come with the option of 18" wheels at point of sale you will have to inform your insurance Co of the change which could be costly.

Why the need to fit smaller rims?

tompip · Mar 26th, 2013, 21:59

was thinking of smaller rims as there seems to be less choice for 20 inch rims

Mar 25th, 2013, 21:44	#1
tompip Senior Member Last Online: Oct 22nd, 2022 19:00 Join Date: Jan 2013 Location: northumberland	downsize? hi , i currently have 20 inch rims on my XC 60, if i want to downsize to 18 inch rims, is it just a straight forward process as taking the 20 inch ones off and putting the 18 inch ones on or is there something else involved....

Mar 25th, 2013, 21:58	#2
StockholmSyndrome Spanner Last Online: May 24th, 2024 17:03 Join Date: Mar 2013 Location: South West	Use an online tyre calculator to work out what tyre size you'll need to compensate for downsizing rim size. Get in touch with a volvo dealer to make sure your trim level of XC60 can take 18" wheels over it's brakes

Mar 25th, 2013, 23:57	#3
Bill_56 Premier Member Last Online: Oct 29th, 2021 23:58 Join Date: Jan 2010 Location: Over the hill	Even in you establish that smaller wheels will fit, be wary of aftermarket wheel sellers. Many may advise that as long as the bolt hoes line up all is OK, or that a spigot ring will correct any variations (it won't). Some companies appear to either not understand the subtleties of centre bore and offset, others may depend on the premise that the customer won't understand, and pulling the wool over their customers' eyes. Pay no attention at all to the various online 'equivalent' wheel size databases, to which many wheel sellers link. They nearly all had blatant errors last I looked, at least for Volvos. Safesat bet is to buy original Volvo wheels, expensive as it may be. Or stick with what you have.

Mar 26th, 2013, 02:04	#4
Marty Dolomite Premier Member Last Online: Jul 10th, 2024 18:45 Join Date: Dec 2011 Location: Southampton	^^^^^ Wot they said. You will need to work out what profile tyres to fit to keep the overall size the same or recalibrate the speedo to allow for the different size. Also if that car doesn't come with the option of 18" wheels at point of sale you will have to inform your insurance Co of the change which could be costly. Why the need to fit smaller rims?

Mar 26th, 2013, 21:59	#5
tompip Senior Member Last Online: Oct 22nd, 2022 19:00 Join Date: Jan 2013 Location: northumberland	was thinking of smaller rims as there seems to be less choice for 20 inch rims

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