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Old 31-07-2010   #1
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Croma Tyre Choices

Tyres! the dreaded choice and often not as good as one hoped.

Let us see what tyres you Croma drivers have, your views and experiences etc.

No preferred format, just what you have, information you know, and of course your comments.
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Last edited by s130; 31-07-2010 at 19:52.
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Old 31-07-2010   #2
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Re: Croma Tyre Choices

Two sets of tyres for me so far. First set were Goodyear NCT 5, generally fine, did 16,000 miles on them (sold with average 4mm tread left) but were quite noisy and changed them because I changed the wheels. Second set were Michelin Primacy, did 27,000 miles but two are at the limit and the other two have about 3mm left. Prone to the Vectra 'drone' due to small tread blocks at the shoulder.

Current tyres are Bridgestone Potenzas, seem OK so far. The car also had Potenzas when I bought it but they were near the limit at 14,000 miles due to the dreaded rear wheel alignment issues so it wasn't possible to get an accurate judgement.

Probably fit Dunlops or Continentals next as they've given good service in the past.

HTH.
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Old 31-07-2010   #3
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Re: Croma Tyre Choices

Kumoh somethings on Bunny's Croma - they seem ok.
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Old 31-07-2010   #4
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Re: Croma Tyre Choices

Quote Originally Posted by s130 View Post
Tyres! the dreaded choice and often not as good as one hoped ...
Nice one s130 ...

I've a potential list somewhere - will dig-it-out later.

Currently on 225/45R18 95Y Conti ContactSport3 (previous owner's selection) & now done 14K mls. Plenty meat remaining on centre blocks - but some noticeable wear on shoulder sipes.

Will folks advise if they've tried alternative fits e.g. 235/45R18 & alternative load/speed ratings. (My Croma docs show evidence of Kumho 91 load - but swiftly replaced for some reason).

.
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Old 01-08-2010   #5
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Re: Croma Tyre Choices

Tyre-wall data check - Conti SportContact3 marked “225/45ZR18 95W” XL, with “LM4F” indicating they’re out of the Uniroyal-Englebert Reifen GmbH plant in Aachen.

I’m not one for pushing-the-envelope on tyre performance – but I reckon there’s not many that come close to these in the dry or wet. Although the trade-off is arguably noise & life-span - and maybe fuel economy could be better, given these weigh only 23 lbs. But l’ll leave-it-with-you whether you prefer to go with `testimonials’ or `tests’ on tyres.

My potential replacement list excludes the premier league clubs (Bridgestone-Firestone, Continental, Goodyear-Dunlop, Michelin, & Pirelli) as I took the decision some few years back to go with mid-range tyres. Basically then, looking at …

Avon ZZ3 95Y XL (24.7 lbs)
Falken FK452 95Y XL (25.3 lbs)
Kumho KU31 Ecsta Sport 91Y? (25 lbs)
Hankook K110 V12 EVO 95Y XL (xx lbs)
Vredestein Ultrac Sessanta 95Y XL (xx lbs)

… anyone running these?

-------------------------
55 Prestigio 1.9/16v 150 (225/45ZR18 95W XL)
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Old 02-08-2010   #6
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Re: Croma Tyre Choices

(I do around 12K miles per year of which approx 3000 is towing a caravan)

All wheels - From New: Bridgestone Turanza ER300 - 215/50 R 17 91W - Cost £140

These original spec tyres were very good IMHO. Driveability, handling (wet & dry) pretty good. Also quiet running tyres which is what you want with a performance touring car like the Croma. No real issues with the tyres. Only problem was the Croma rear suspension setup/tracking problems that caused the rears to wear out in 11,500 miles!

Rear - From 11,500 to 40000 miles : Kumho Ecsta Sport KU31 - 215/50ZR17 95W XL - Cost £84
Decided to try these because of the rear suspension issues and did not want to wreck another set of expensive Bridestones. Full four wheel alignment done.

These tyres, only on the back did not upset the handling (wet or dry) and initially started off with no obvious tyre noise increase. As mileage increased the tyre treads started the feather (wedge shaped) and thus became noisier.

Front - From 23,500 to 40000 miles: Kumho Ecsta Sport KU31 - 215/50ZR17 95W XL - Cost £88

With Kumho all round the handling of the car became Very very good. Sharp turn in and abililty to really throw the car around in the wet or dry. Downside is that after a few thousand miles were added to the front tyres they became noisy and this, coupled with the rear tyre noise became far more noticeable. Not unbearable but you know it is there and this may upset some people.

The other problem I have with Kumho on the front is that despite two attempts by the tyre shop to balance them I was getting a very very slight shimmering/virbration at around 73 to 77 mph. This would change with road surface and camber. When the tyres are loaded in a bend then the shimmering stops.

Current tyre tread depths are 4mm front and back. Based on wear rates I got/expect the following: (based on 6.4 mm of usable tread)

Bridgestone Front : 23,500 miles (3671 miles / mm)
Bridestone Rear : unknown

Kumho Front: 26400 miles (4125 miles / mm)
Kumho Rear: 45600 miles (7125 miles / mm)
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Old 02-08-2010   #7
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Re: Croma Tyre Choices

Current tyres are Hankook V12 EVO 18". Very very good - quiet and go round corners, have never slipped despite a few hair-raising moments (not the fault of the tyres, usually BMWs trying to kill me). These were about £90 each when on offer from www.camskill.co.uk.

The fronts are approaching done after 20k miles. As it happens, I ordered my replacements last week, and they arrived today. They are Forceum Hexa and cost (drum roll...) £55 inc VAT each (now gone up to £57.52 though) + £5 delivery for the two.

I'm sure the brand snobs will turn their noses up, but they look very impressive. DOT, ISO, E and In Metro (?) marked. They also have a nice thick rim protector. They'll be going on the car whenever the old ones get to their indicator bumps.

Manufacturer: www.eptyres.com
Supplier: http://www.tyretraders.com/tyreInfor...2545R1895YHEXA

I'll take some photos if anyone's interested.

P.S. My full-size spare is a Vredestein Ultrac Sessanta, simply because it was the lowest-priced non-directional tyre available (required for a spare, for obvious reasons). I've never driven on it but it looks very pretty. I think it was around £130-ish.
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Last edited by Doofer; 02-08-2010 at 16:23.
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Old 02-08-2010   #8
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Re: Croma Tyre Choices

Quote Originally Posted by Caravadossi View Post
Nice one s130 ...
Will folks advise if they've tried alternative fits e.g. 235/45R18 & alternative load/speed ratings. (My Croma docs show evidence of Kumho 91 load - but swiftly replaced for some reason).

.
Mine had 91's on when I bought it. I replaced the lot even though they all had tread, as it was very saggy and reluctant to go round corners. They are often cheaper, so tempting for some.

I don't know whether it's true, but it's a popular net myth that insurers may refuse cover if you have the wrong size or spec tyres fitted. It sounds feasible - the car has only ever been tested with the required tyres fitted, so you're venturing into the unknown when you mess with it. God knows what the handling's going to do with extra wide or soft tyres fitted.
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Old 02-08-2010   #9
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Re: Croma Tyre Choices

Quote Originally Posted by Doofer View Post
P.S. My full-size spare is a Vredestein Ultrac Sessanta, simply because it was the lowest-priced non-directional tyre available (required for a spare, for obvious reasons). I've never driven on it but it looks very pretty. I think it was around £130-ish.
My Bravo's spare is a directional tyre. It means I'll have to do a lot of tyre swapping if I ever do get a puncture but I got it for free so I mustn't grumble too much!

Oh and I've the Sessanta's on the rear of the Bravo and it drives fine. Will need to get another pair and move the older ones to the front in the next few months (or get some winter tyres).

ummm........ Croma (there it's back on topic )
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Old 02-08-2010   #10
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Re: Croma Tyre Choices

Quote Originally Posted by Doofer View Post
Current tyres are Hankook V12 EVO 18" ... replacements ... Forceum Hexa ...
Hankook K110 V12 EVO
What is the DoT plant code? T1, T7, 1G, 5M … ??

Forceum Hex
Indonesia – stable mate to Accelera
What is the DoT plant code?
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Old 02-08-2010   #11
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Re: Croma Tyre Choices

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Last edited by s130; 02-08-2010 at 20:55.
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Old 02-08-2010   #12
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Re: Croma Tyre Choices

I can get the Hankook codes tomorrow, but for the Forceum Hexa:

DOT: 09 RR 47 (4909)

Manufacturer: PT ELANGPERDANA TYRE INDUSTRY, BOGOR, JAWA BARAT, INDONESIA

...and it was made less than 8 months ago.

Other codes:

e4 0245621-S
E4 0248430
M231-01
225/45 ZR18 95Y XL
MADE IN INDONESIA
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Last edited by Doofer; 02-08-2010 at 21:29.
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Old 02-08-2010   #13
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Re: Croma Tyre Choices

Quote Originally Posted by Hellcat View Post
My Bravo's spare is a directional tyre. It means I'll have to do a lot of tyre swapping if I ever do get a puncture but I got it for free so I mustn't grumble too much!
)
I'm not sure how you'd swap them around if you have 3 left wheels and 1 right!

I couldn't find a straight answer on whether it's OK to have a directional spare. I did read somewhere that a picky MOT tester could even fail it.

I don't know how bad it would be. For the classic chevron-shaped tread, I can easily imagine it would pump water into the centre of the tread. However, the tread on the Vredestein makes no obvious sense at all - it seems to pump water into a dead end in one direction, but they clearly work.
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Old 02-08-2010   #14
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Re: Croma Tyre Choices

Thanks Doofer

09 = Bogor 4909 = Wk49/2009

s130 > prefer the Golden Gate Lotus Club list thanks ...

http://www.gglotus.org/ggtech/tire-DOTnotes/tirerat.htm

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Old 06-08-2010   #15
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Re: Croma Tyre Choices

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Last edited by s130; 06-08-2010 at 18:50.
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