V50 Wheels/Tyres : - Changing from 205/50/17 - 225/45/17

sandspider · Nov 7th, 2011, 13:02

Hello Guys,

I have a V50 R-design 2.0D. It has 205/50/R17 93W tyres at the moment which need changing. One suggestion has been to use 225/45/R17 which are almost identical in circumference. However has anyone had any problems with the wider tyres?
Also the Michelin Pilot Sport 3's I am looking at are 91 Y rated. Does the lower weight rating matter? I see that some of the original tyres are 91 rated.

Many thanks,

Mark

t5_monkey · Nov 7th, 2011, 13:27

Those should fit just fine.

You'll get better grip and ride, and lose a marginal amount of fuel economy at M-way speeds.

Loading would depend if you go 4 up with luggage - IIRC your car is 57/43 front to rear, and the kerb weight around 1450kg plus you so you should be able to do the math to figure out of the max loading is OK For your car.

Inform your insurer... formality, but they can be gits about the small detail sometimes.

The Hooded Claw · Nov 7th, 2011, 13:27

Mark,

the "new" tyres will be Slightly WIDER & be less "Thicker"

225 is the Width (Tread) size & 45 is the "wall" size so you'll actually be putting MORE tread on the road & the tyres will be "Thinner" (Between the road surface & the alloy ect )

You may find the Ride Quality a little Harsher but overall there should be no problems with the new tyres

OH!!! NOTE .. being Wider they MAY catch/rub on the inner aches as you go to full lock Just check beforehand just in case

Keith

DCN85 · Nov 7th, 2011, 17:04

as t5_monkey said, inform your insurer. If you were unfortunate to have a blow out or tyre related issue with a non-recommended tyre size/load rating fitted, they would undoubtedly refuse to pay out if they hadn't been informed.

Also, the maths isn't quite as simple as t5 mentioned. The load on each tyre is dynamic and will change with cornering, braking, accellerating, speed etc. A simple consideration of static load distribution will be massively underestimated.

sandspider · Nov 7th, 2011, 19:10

Thanks for the advice everyone.
I checked with the tyre shop and they can do 94W rated tyres for €10 more per tyre, so I think I will go with that. My only slight worry is that the 7in rim will be too narrow. i have seen calculators which show the 225 as the widest tyre for a 7in rim, but will it make the tyre conform to a funny shape?

Mark

t5_monkey · Nov 7th, 2011, 20:33

Quote:

Originally Posted by sandspider

Thanks for the advice everyone.
I checked with the tyre shop and they can do 94W rated tyres for €10 more per tyre, so I think I will go with that. My only slight worry is that the 7in rim will be too narrow. i have seen calculators which show the 225 as the widest tyre for a 7in rim, but will it make the tyre conform to a funny shape?

Mark

I think you'll be alright on 7's - I'm on 7.5's and they're fine.

interestingly, ride is better on 225's than 215's and 205's (had all three on mine)

sandspider · Nov 8th, 2011, 21:44

Thanks again for the help.

I emailed Michelin today and got a response within 30 mins (which really impressed me!). They say that the 225 are fine on 7 in rims, so that's it ordering the tyres tomorrow.

I'll let you know how I get on.

Mark

Metblackrat · Nov 9th, 2011, 17:44

Just as an aside, Kwik Fit are offering 25% off tyres at the moment. Makes a big difference on a set of 4 (£140 on Contis and £170 on Michelins).

t5_monkey · Nov 9th, 2011, 23:26

After shopping around my CC3's cost about £110 a corner.

Backhill1 · Nov 10th, 2011, 13:36

I had the same thoughts as the tyres are so much cheaper and more choice for winter grips????

Anyway Volvo said NO! Tyre manufactures said not a problem as did my insurers (Admiral). As it turned out managed to get the correct size in a Uniroyal Winter Tyre so no need to change.

The difference is less than the wear from a new to old tyre so its up to you.

Nov 7th, 2011, 13:02	#1
sandspider New Member Last Online: Jan 30th, 2017 10:30 Join Date: Nov 2011 Location: Kildare	Changing from 205/50/17 - 225/45/17 Hello Guys, I have a V50 R-design 2.0D. It has 205/50/R17 93W tyres at the moment which need changing. One suggestion has been to use 225/45/R17 which are almost identical in circumference. However has anyone had any problems with the wider tyres? Also the Michelin Pilot Sport 3's I am looking at are 91 Y rated. Does the lower weight rating matter? I see that some of the original tyres are 91 rated. Many thanks, Mark

Nov 7th, 2011, 13:27	#2
t5_monkey Monkeying Around Last Online: Mar 13th, 2016 20:05 Join Date: Mar 2010 Location: York	Those should fit just fine. You'll get better grip and ride, and lose a marginal amount of fuel economy at M-way speeds. Loading would depend if you go 4 up with luggage - IIRC your car is 57/43 front to rear, and the kerb weight around 1450kg plus you so you should be able to do the math to figure out of the max loading is OK For your car. Inform your insurer... formality, but they can be gits about the small detail sometimes. __________________ Release the Monkey inside of you >>> Trunk Monkey

Nov 7th, 2011, 13:27	#3
The Hooded Claw Owner Volvovehiclesclub Last Online: Apr 4th, 2014 12:18 Join Date: Dec 2008 Location: Choosing which Volvo to go out in Today !!! lex parsimoniae View Photos By: The Hooded Claw	Mark, the "new" tyres will be Slightly WIDER & be less "Thicker" 225 is the Width (Tread) size & 45 is the "wall" size so you'll actually be putting MORE tread on the road & the tyres will be "Thinner" (Between the road surface & the alloy ect ) You may find the Ride Quality a little Harsher but overall there should be no problems with the new tyres OH!!! NOTE .. being Wider they MAY catch/rub on the inner aches as you go to full lock Just check beforehand just in case Keith __________________ 2000 C70 T5 Phase 1 240 Bhp in Saffron Orange ("SAPPHIRE") 2001 S80 2435cc Now with Andy Northface () 1994 960 CD 3.0 Estate ("The Purple Monster") VOC 25900 lex parsimoniae

Nov 9th, 2011, 23:26	#9
t5_monkey Monkeying Around Last Online: Mar 13th, 2016 20:05 Join Date: Mar 2010 Location: York	After shopping around my CC3's cost about £110 a corner. __________________ Release the Monkey inside of you >>> Trunk Monkey

Nov 7th, 2011, 17:04	#4
DCN85 Member Last Online: Nov 5th, 2021 08:50 Join Date: Apr 2010 Location: Belfast	as t5_monkey said, inform your insurer. If you were unfortunate to have a blow out or tyre related issue with a non-recommended tyre size/load rating fitted, they would undoubtedly refuse to pay out if they hadn't been informed. Also, the maths isn't quite as simple as t5 mentioned. The load on each tyre is dynamic and will change with cornering, braking, accellerating, speed etc. A simple consideration of static load distribution will be massively underestimated.

Nov 7th, 2011, 19:10	#5
sandspider New Member Last Online: Jan 30th, 2017 10:30 Join Date: Nov 2011 Location: Kildare	Thanks for the advice everyone. I checked with the tyre shop and they can do 94W rated tyres for €10 more per tyre, so I think I will go with that. My only slight worry is that the 7in rim will be too narrow. i have seen calculators which show the 225 as the widest tyre for a 7in rim, but will it make the tyre conform to a funny shape? Mark

Nov 8th, 2011, 21:44	#7
sandspider New Member Last Online: Jan 30th, 2017 10:30 Join Date: Nov 2011 Location: Kildare	Thanks again for the help. I emailed Michelin today and got a response within 30 mins (which really impressed me!). They say that the 225 are fine on 7 in rims, so that's it ordering the tyres tomorrow. I'll let you know how I get on. Mark

Nov 9th, 2011, 17:44	#8
Metblackrat Senior Member Last Online: Jul 19th, 2012 22:29 Join Date: Mar 2006 Location: Hatfield	Just as an aside, Kwik Fit are offering 25% off tyres at the moment. Makes a big difference on a set of 4 (£140 on Contis and £170 on Michelins).

Nov 10th, 2011, 13:36	#10
Backhill1 Master Member Last Online: May 17th, 2023 13:08 Join Date: Nov 2011 Location: Turriff	I had the same thoughts as the tyres are so much cheaper and more choice for winter grips???? Anyway Volvo said NO! Tyre manufactures said not a problem as did my insurers (Admiral). As it turned out managed to get the correct size in a Uniroyal Winter Tyre so no need to change. The difference is less than the wear from a new to old tyre so its up to you.

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