Has anyone fitted 225x45/19 instead of 225x40/19 for a softer ride for their Karoq?

My Sportline 2.0TSI came fitted with them, so they should fit OK and theoretically should give a softer ride. There's a 3.4% increase in circumference, so you'll be going slightly faster than the speedo thinks, but since they usually over-read it'll probably balance out. 

245/40/19 are another option. They were even cheaper than the smaller sizes (here in NZ anyway)

 

 

 

Edited 27 April, 20224 yr by bigreddognz
Duplicated text

41 minutes ago, bigreddognz said:

245/40/19 are another option. They were even cheaper than the smaller sizes (here in NZ anyway)

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A couple of things; presumably those wheels are 8J, and do you have (or could you possibly take) an oblique photo that shows how much rim protection those tyres provide?

 

Obviously 245s are wider than 225s, but it's difficult to tell how much wider they are until you see them on a wheel.

 

The simplistic diagrams on tyre size comparison websites aren't much use really.

 

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Edited 27 April, 20224 yr by Phutters

22 hours ago, Suuntobob said:

Has anyone fitted 225/45R19 instead of 225/40R19 for a softer ride for their Karoq?

 

If you want a softer ride, maybe try 235/50R18 on 7.5Jx18 ET50 rims from the VW iD.3 or 245/45R18 on 8Jx18 ET45 rims from the VW iD.4

 

19" Karoq rims are usually 8J wide, which will make the ride of 225/45R19 tyres harder compared to fitting the same size tyres to narrower 7J or 7.5J rims.

 

7.5Jx18 ET50 5/112 57.1 steel rims from the VW iD.3 (alloy rims might also be available in this size)

https://www.mytyres.co.uk/rims/details?vehicleId=1258516952071017584&rimCode=ALCAR9373

https://www.oponeo.pl/wybierz-felgi-stalowe#&&/wEXCwUKcGNrX1RyTFNFdAUFNTAsMDAFE3Bja19UckxTQm9sdFBhdHRlcm4FBTV4MTEyBQtwY2tfVHJMU0NhcgUBMAUMcGNrX1RyTFNEaWFtBQIxOAUHcGNrX0NQZwUBMQUHcGNrX0lQUAUCMTIFE3Bja19UckxTQ2VudHJhbEJvcmUFBTU3LDEwBRVwY2tfTHN0U1NvcnRQYXJhbWV0ZXIFBTY1NTM2BRVwY2tfVHJMU1NvcnREaXJlY3Rpb24FATIFCHBja19JT0ZQBQIzMAUNcGNrX1RyTFNXaWR0aAUFNyw1MErjKHnaaW158YcDKVQmDZgai9CGHg==

 

8Jx18 ET45 5/112 57.1 steel rims from the VW iD.4 (alloy rims might also be available in this size)

https://www.oponeo.pl/wybierz-felgi-stalowe#&&/wEXCwUKcGNrX1RyTFNFdAUFNDUsMDAFE3Bja19UckxTQm9sdFBhdHRlcm4FBTV4MTEyBQtwY2tfVHJMU0NhcgUBMAUMcGNrX1RyTFNEaWFtBQIxOAUHcGNrX0NQZwUBMQUHcGNrX0lQUAUCMTIFE3Bja19UckxTQ2VudHJhbEJvcmUFBTU3LDEwBRVwY2tfTHN0U1NvcnRQYXJhbWV0ZXIFBTY1NTM2BRVwY2tfVHJMU1NvcnREaXJlY3Rpb24FATIFCHBja19JT0ZQBQIzMAUNcGNrX1RyTFNXaWR0aAUFOCwwMEpyAlnsl2gddbJHxYhr9PZhaY2RfA==

 

ETRTO approved rim sizes

225/45 7.0-7.5-8.5

225/40 7.5-8.0-9.0

235/50 6.5-7.5-8.5

245/45 7.5-8.0-9.0

 

As you can see from the chart, a 7.5J rim is ideal for a 235/50R18 tyre size and an 8J rim is ideal for a 245/45R18 tyre size.

 

The chart also shows that a 225/40R19 is ideal for an 8J rim, but that a 225/45R19 tyre would be better off being fitted to a narrower 7.5J rim. Fitting a 225/45R19 tyre to a wider 8J rim causes the sidewalls to flex less easily which makes the ride harder.

 

Edited 27 April, 20224 yr by Carlston

Isn't ET50 is too much.  I thought ET45 was the maximum. 

 

tom

On 27/04/2022 at 21:59, Phutters said:

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A couple of things; presumably those wheels are 8J, and do you have (or could you possibly take) an oblique photo that shows how much rim protection those tyres provide?

 

Obviously 245s are wider than 225s, but it's difficult to tell how much wider they are until you see them on a wheel.

 

The simplistic diagrams on tyre size comparison websites aren't much use really.

 

.

Wheels are 7.5inch, they are the Xtremes off my Octavia RS - they suit the Karoq much better than the Octavia.

 

Will get better pics tomorrow when my partner is home.

Edited 28 April, 20224 yr by bigreddognz
Spelling 🙄

4 hours ago, Sanqhar said:

Isn't ET50 is too much.  I thought ET45 was the maximum. 

 

In fact it is, by Škoda specs.

 

Edited 28 April, 20224 yr by agedbriar

10 hours ago, Sanqhar said:

Isn't ET50 is too much.  I thought ET45 was the maximum. 

 

Some owners run non-standard tyre sizes and rim specifications including different offsets.

 

Many aftermarket alloy rims aren't available with exactly the same widths and offsets as standard, and hence owners will try to make sensible decisions.

 

Anyone who fits wheel spacers could be making a big change to their offset. For example, using a 25mm wheel spacer will reduce the offset by 25mm. So an ET45 offset would change to ET20. I'm not a fan of wheel spacers or big changes to the original offset specification...but 5mm difference isn't a big change.

 

Big Red Dog in New Zealand is running 245/40R19 on 7.5Jx19 ET51 rims, which have even more offset than ET50...but only by 1mm.

 

Edited 28 April, 20224 yr by Carlston

8 hours ago, bigreddognz said:

Wheels are 7.5inch, they are the Xtremes off my Octavia RS - they suit the Karoq much better than the Octavia.

 

Will get better pics tomorrow when my partner is home.

 

Compared to the standard 8Jx19 ET45 rims, 7.5Jx19 ET51 rims give you about an extra 25mm of clearance.

 

This extra rim clearance could be very useful when going through 2 metre width restrictions.

 

However, 245/40R19 need 8J wide rims.

 

ETRTO approved tyre and rim sizes

225/40 7.5-8.0-9.0
235/40 8.0-8.5-9.5
245/40 8.0-8.5-9.5

 

As you can see in the chart above, 245/40 tyres need a rim width between 8J and 9.5J, with 8.5J being a good starting point and hence enthasised in bold.

 

Fitting 225/40R19 to a 7.5J rim will help improve ride comfort compared to fitting this size tyre to the standard 8J rim. This is because the narrower the rim, the more easily the sidewalls flex with any given tyre size.

 

Edited 28 April, 20224 yr by Carlston

On 26/04/2022 at 16:03, Suuntobob said:

Has anyone fitted 225x45/19 instead of 225x40/19 for a softer ride for their Karoq?

It is marginal, and don’t forget it will also depend on which tyres you choose.  Generally if they have Eco or Sport in the tyre name will be harder.

 

It is also weather dependent, as soon as you get cooler days and nights, anything that is a summer tyre will be lot firmer than an all season tyre or a winter tyre.

 

To be perfectly honest, if you find the ride far too hard, (rather than a bit hard) then need a tyre with at least 55 (or even 60) sidewall which means getting smaller diameter rims.   But the tyres are usually cheaper which offsets some of the cost of buying the rims (and can always sell the 19 inch rims).  

 

You might also save money by less damage from poor road surfaces, potholes, and kerbing with deeper tyres.  
 

The 19 inch rims only advantage is vanity (looks) and shaving a fraction of a second when cornering fast on the cars limit.  The disadvantages are higher cost, more expensive tyres, harsh ride, higher fuel consumption, risk of kerbing, risk of pothole damage, lack of tyre choice in some obscure sizes.   But it is your car and your choice which you prefer.

 

Edited 29 April, 20224 yr by SurreyJohn
Comma

On 27/04/2022 at 21:59, Phutters said:

.

A couple of things; presumably those wheels are 8J, and do you have (or could you possibly take) an oblique photo that shows how much rim protection those tyres provide?

 

Obviously 245s are wider than 225s, but it's difficult to tell how much wider they are until you see them on a wheel.

 

The simplistic diagrams on tyre size comparison websites aren't much use really.

 

.

Is this what you're after?

8 minutes ago, bigreddognz said:

Is this what you're after?

.

It is. Thanks very much.

 

Smart socks too.

 

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Edited 29 April, 20224 yr by Phutters

It doesn't matter how much wheel protection is provided by the width of the tyre my wife still managed to curb the alloys in her Karoq & my Superb. She made a right mess of my front near side. I'm now looking at getting all of them them powder coated black to match the paintwork. Her Karoq front near side 19" Crater alloy is also a mess & now needs refurbishing.

I'll say no more or I could get a visit from the female spacial awareness police👮‍♀️   

For anyone looking at tyres, Michelin had just updated the CrossClimate SUV tyre to match the CrossClimate 2s -- it's now the CrossClimate 2 SUV. And it comes in the 225/45 R19 size on my Sportline too.

 

As far as I can discover the SUV version will be 'more rugged to cope with mild off-roading' and so presumably have stiffer sidewalls. There's no information yet on whether this translates into less comfort than the CC2. 

 

Details at : Everything you need to know about the Michelin CrossClimate 2 SUV - Tyre Reviews and Tests

 

Chris