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      01-09-2015, 08:47 PM   #1
Socket
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Should I buy these

I've had my eye on these for a while but wanted a second opinion before pulling the trigger
Tyres look stretched but might just be the pics
What do you think... bargain or dud??

http://www.ebay.com.au/itm/271731454...84.m1423.l2648
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      01-09-2015, 09:01 PM   #2
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245 on 9.5 is definitely a little stretched
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      01-09-2015, 09:07 PM   #3
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Quote:
Originally Posted by woosh View Post
245 on 9.5 is definitely a little stretched
Agree.... does that pose a safety issue or does it just make it look wrong??
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      01-09-2015, 09:54 PM   #4
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Haha I had been looking at them as well, and the main reason I haven't is Id have to buy a new set of rear tyres straight away.

You will definitely have less performance and it will be less safe than stock sizes (will affect speed reading also) but it would be ok, just depends if you could live with it ?

Edit :

You could keep the 245's and use them in the future as fronts (though they may go off by then ...)
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      01-09-2015, 09:58 PM   #5
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Quote:
Originally Posted by XIX View Post
Haha I had been looking at them as well, and the main reason I haven't is Id have to buy a new set of rear tyres straight away.

You will definitely have less performance and it will be less safe than stock sizes (will affect speed reading also) but it would be ok, just depends if you could live with it ?

Edit :

You could keep the 245's and use them in the future as fronts (though they may go off by then ...)
Ha ha Why would you need to buy a new set of rears?
Im on 19s so would the speedo still need adjusting?
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      01-09-2015, 10:02 PM   #6
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The tyres would be stretched but the front and rear wheel sizes are within the allowable range for the respective tyre widths.
It depends if stretched is your thing.
I'm pretty sure that, technically, you're not allowed to run a narrower tyre than the narrowest that is specified on the tyre plaque/label. You might need to research this further. I don't know why anyone would run narrower anyway.

Make sure the hub centre bore is 72.56mm (usually specified as 72.5 or 72.6). Some BMW wheels have the same PCD but have larger HCB (74.1mm), which can cause wheel vibrations. Commodores have smaller HCBs but the aftermarket wheels that are designed for them generally have larger HCBs.
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      01-09-2015, 10:18 PM   #7
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Quote:
Originally Posted by Socket View Post
Ha ha Why would you need to buy a new set of rears?
Im on 19s so would the speedo still need adjusting?
Because they are the wrong size

Its a minimal difference, but different. At 100kmh you will really be doing ~103kmh, but they are narrower and taller, better for straight line (longer per gear) but worse for performance.
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      01-09-2015, 10:21 PM   #8
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It won't throw the speedo off by much at all, since it's stretched the sidewall will have less height. Correct size would be 255/265/ 30/19.

In general, a slightly stretched tyre will give you more response when cornering due to less sidewall flex. A correct fitting size tyre will give you more grip, less feel.
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      01-09-2015, 10:26 PM   #9
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Quote:
Originally Posted by AUSe92 View Post
In general, a slightly stretched tyre will give you more response when cornering due to less sidewall flex. A correct fitting size tyre will give you more grip, less feel.
That would be correct if it was the correct profile, in this case it is a 35 profile on the rear so it has an 8% taller sidewall and will have more flex and worse response.
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      01-09-2015, 10:39 PM   #10
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Keep in mind each tyre manufacturer may have 30 profile tyres, but it still varys in height.

For example, a Conti SportContact 3 sits a little taller than the Pirelli P7 in the same size
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      01-09-2015, 10:56 PM   #11
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Quote:
Originally Posted by AUSe92 View Post
Keep in mind each tyre manufacturer may have 30 profile tyres, but it still varys in height.

For example, a Conti SportContact 3 sits a little taller than the Pirelli P7 in the same size
Im not sure how that is relevant? The correct size is a 255 or 265 with a 30 profile. The tyres on these rims are a 245 but with a 35 profile. That is an 8 - 10% increase in tyrewall height (like for like) even if there is some minor variances in different brands.

Socket I wouldn't run these on my car for the reasons I have mentioned, but the overall variance is not enough to cause an issue for daily driving.
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      01-09-2015, 11:12 PM   #12
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Nash_86 has these. Hit him up. Maybe tell u about fitment.
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      01-09-2015, 11:29 PM   #13
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Quote:
Originally Posted by XIX View Post
Im not sure how that is relevant? The correct size is a 255 or 265 with a 30 profile. The tyres on these rims are a 245 but with a 35 profile. That is an 8 - 10% increase in tyrewall height (like for like) even if there is some minor variances in different brands.

Socket I wouldn't run these on my car for the reasons I have mentioned, but the overall variance is not enough to cause an issue for daily driving.
I know what the correct size should be, I've already outlined the correct size. Are you sure about this 8% increase with a 245 track ???
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      01-09-2015, 11:57 PM   #14
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That second pic, says concave.
i see no concave lol
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      01-10-2015, 12:46 AM   #15
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Quote:
Originally Posted by waterbottle1 View Post
That second pic, says concave.
i see no concave lol
Yeah bottle not exactly super concave huh? more like flat as concave
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      01-10-2015, 12:47 AM   #16
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The rims are 8.5 fronts and 9.5 rears

Could I use the rims but replace the rubber with 245 on the fronts and 265 on the rear? or are the rims a bit narrow?
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      01-10-2015, 12:49 AM   #17
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Quote:
Originally Posted by AUSe92 View Post
I know what the correct size should be, I've already outlined the correct size. Are you sure about this 8% increase with a 245 track ???
3% increase in circumference. (the 245/35 compared to sockets OEM 255/30)

http://www.wheelcalc.com/
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      01-10-2015, 01:09 AM   #18
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Socket, just get tyres that fit properly, its not worth the few hundred bucks saving for something that is the only thing between your car and the road.

IMO, the GT-CX wheels from Jason at EuroDivision look similar to these (if this is the sort of wheel you want) with a sale price of $989 (if the end of year sale still on).
Jason can also get tyres from a shop down the road from him, where he gets them at wholesale cost. I rang around to compare tyre prices and his price for the tyres i went with was below cost of some places i called. (they was 2014 stock too).
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      01-10-2015, 01:12 AM   #19
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Quote:
Originally Posted by harms View Post
Socket, just get tyres that fit properly, its not worth the few hundred bucks saving for something that is the only thing between your car and the road.

IMO, the GT-CX wheels from Jason at EuroDivision look similar to these (if this is the sort of wheel you want) with a sale price of $989 (if the end of year sale still on).
Jason can also get tyres from a shop down the road from him, where he gets them at wholesale cost. I rang around to compare tyre prices and his price for the tyres i went with was below cost of some places i called. (they was 2014 stock too).


Thanks Harmsy, Great idea mate... seems the call on this one is dud
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      01-10-2015, 02:02 AM   #20
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Quote:
Originally Posted by harms View Post
3% increase in circumference. (the 245/35 compared to sockets OEM 255/30)

http://www.wheelcalc.com/
Circumference is not important. Sidewall is the important factor.

check this calculator it is far more conclusive and detailed.

http://tire-size-conversion.com/tire-size-calculator/

a 255/30 has a 13% lower profile than the 245/35 , I was calculating off a 265/30 which is what I would use personally.

Socket I would keep the fronts as is and replace the 245's to the correct size , but 245 on the front isn't that far off either (just that they are on the rear rims so more messing about)
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      01-10-2015, 02:04 AM   #21
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Quote:
Originally Posted by Socket View Post
Thanks Harmsy, Great idea mate... seems the call on this one is dud
Have to agree that Jasons wheels probably look better than these ... Though I very much like the wheels you currently have, think your car looks great !
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      01-10-2015, 02:09 AM   #22
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Quote:
Originally Posted by XIX View Post
Circumference is not important. Sidewall is the important factor.

check this calculator it is far more conclusive and detailed.

http://tire-size-conversion.com/tire-size-calculator/

a 255/30 has a 13% lower profile than the 245/35 , I was calculating off a 265/30 which is what I would use personally.

Socket I would keep the fronts as is and replace the 245's to the correct size , but 245 on the front isn't that far off either (just that they are on the rear rims so more messing about)

Thanks guys
Sounds like not exactly the perfect set up
Also the issue of rubbing if I put em on my lowered car
Right now my current set up doesn't rub, but it might if I fit higher profiles on it. Now I like rubbing but not on my wheel arches
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