Oh dear, thanks KevC. I'm doing 100 miles per day with work at the moment so fuel economy and durability probably trumps everything else at the moment. 

7 hours ago, sknab88 said:

 

The tyres on my car at the moment are P-zeros. Their size is 225/35 R19 and I have the 19" xtreme wheels. However, when I look on the blackcircles website it lists my tyres as 235/35 (R19 etc).

 

 

My 230 will be going onto 235/35/19's   They should give better rim protection.

2 hours ago, sknab88 said:

Oh dear, thanks KevC. I'm doing 100 miles per day with work at the moment so fuel economy and durability probably trumps everything else at the moment. 

 

Should have said this was on my Qashqai. The ratings coding said they were as good as the Contis but this wasn’t the case for economy. Avon’s have worked well and are decent in all other areas and they sponsor the best team in the East Midlands.

23 hours ago, sknab88 said:

Sorry... again. I was sending abbreviated messages whilst trying to get two kids through the night time routine, I thought my shorthand was obvious but I appreciate I was the one writing it :-)

 

The tyres on my car at the moment are P-zeros. Their size is 225/35 R19 and I have the 19" xtreme wheels. However, when I look on the blackcircles website it lists my tyres as 235/35 (R19 etc).

 

 

The Xtremes are 19x7.5 aren't they?  If so, they are too narrow for 235/35r19 which require a minimum 8" rim.

 

There should be a tyre placard on the fuel flap.  That has the factory recommended tyre sizes on it.

Audi 'Polygon' alloys in 18x7.5J come fitted from the factory with 235/35 R 18 tyres.

As many other VW Group vehicles come with 7.5J rims and 235 tyres fitted.

 

eg

2018, VW Golf SV hatchback 1.5 TSI EVO,  Option Wheels, Jurva alloys, 18x 7.5j with 235/40 R 18 tyres.

Volkswagen Golf SV hatchback GT 1.5 TSI EVO 150 PS DSG 5dr 2018 specs _ Carbuyer.mhtml

Edited 22 December, 20178 yr by AwaoffSki

On 22/12/2017 at 00:40, brad1.8T said:

The Xtremes are 19x7.5 aren't they?  If so, they are too narrow for 235/35r19 which require a minimum 8" rim.

 

There should be a tyre placard on the fuel flap.  That has the factory recommended tyre sizes on it.

 

Really? 

 

I have 235 35 19's on standard Extremes...no problems whatsoever.

 

I know a few others on here have done too...

On 22/12/2017 at 18:42, AwaoffSki said:

Audi 'Polygon' alloys in 18x7.5J come fitted from the factory with 235/35 R 18 tyres.

As many other VW Group vehicles come with 7.5J rims and 235 tyres fitted.

 

eg

2018, VW Golf SV hatchback 1.5 TSI EVO,  Option Wheels, Jurva alloys, 18x 7.5j with 235/40 R 18 tyres.

Volkswagen Golf SV hatchback GT 1.5 TSI EVO 150 PS DSG 5dr 2018 specs _ Carbuyer.mhtml

Really?  Which car?  I just did a quick search and (for the Audi A1 at least) the tyre size for a Polygon 18x7.5 is 225/35r18.

 

Given that the 17" rim on the Golf SV GT runs a 225/45r17, it would be highly unusual for VW to stray away from the 225/40r18 fitment that they would normally use when doing a +1 fitment.  I'd think that spec sheet has a typo in it.  If you've actually seen that fitment on a vehicle in real life, I'd be interested to see it as it's outside the recommended rim range that most tyre manufacturers would use.

 

If it's on the placard in the fuel flap then I guess you are OK.  At least you are covered for insurance purposes.

 

Note that rim range isn't just dependant on tyre width but also the sidewall height. eg: you can fit a 235/45r18 to a 7.5" rim but not a 235/40r18

 

 

 

On 25/12/2017 at 09:12, pist0nbr0ke said:

 

Really? 

 

I have 235 35 19's on standard Extremes...no problems whatsoever.

 

I know a few others on here have done too...

 

You probably haven't had problems... but you probably haven't pushed the tyre to any of the extremes the manufacturers subject their tyres to when ascertaining what rim sizes are suitable for the various tyre sizes.

 

If you look up the tyre manufacturers specifications, you will see what the recommended rim width ranges are. Just google 235/35r19 rim range.  It's 8"-9.5"

http://www.1010tires.com/Tools/Tire-Size-Calculator/235-35R19

 

 

Sorry my mistake on the Audi A1 Competition Sportline wheels / tyres, the standard tyres were 225/35R 18,

just the set i have which were take offs i bought are fitted with 235/35 R 18's.

http://tyresizecalculator.com/charts/tire-width-for-a-wheel-rim-size-chart 

 

Remember that the Width is sidewall to sidewall, and not tread width, and bead width is not a constant, 

certain low profile and XL / Reinforced tyres and with Rim Protection might vary.

Some will want the narrower tyre with the wider tyre giving more rim protection, just as some might go with a higher profile tyre and not so wide tyre for rim protection.

 

The thing with recommendations is that that are giving guidance to use your brain.

Consider what you are doing, why you are doing it, and is it safe and legal, and something you want to be doing.

Feet for Dancing, and head for thinking, and stay away from Kwik Flit Fitters with the gear and sometimes no idea.

 

There are those that would never ever change a vehicle from Manufacturers OEM spec, and only ever replace parts with OEM, 

or use 'recommended consumables',  that is fine, let them do their thing, that is what Manufacturers like, 

and some Government make sure you must do. Or would like to do that.

Edited 26 December, 20178 yr by AwaoffSki

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