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        General >> Give/Need advice to/from others >> Are these tyres the wrong size?
        
(Message started by: tricky_dicky on May 6^th, 2009, 10:01am)

Title: Are these tyres the wrong size?
Post by tricky_dicky on May 6^th, 2009, 10:01am

Could anybody tell me if these tyres are the wrong size for my Ultima 2.3 saloon, it has the 12 spoke soft-effect alloys fitted with 225/55/v16. Shouldn't they be either 205/55 or 225/50 ? Will it matter if I leave these tyres on it as they have thousands of miles left in them? The tyres seem very close to the wheel arches which I thought was just saggy worn out springs (I ordered some heavy duty springs to sort the ride hieght out) now i'm confused ???

Title: Re: Are these tyres the wrong size?
Post by Highlander on May 6^th, 2009, 11:01am

55 profiles arent listed for the Scorpio but they should be fine, your 55 tyre diameter is only around 2cm larger than the 50 profiles so 1cm nearer the wheel arch.

You're speedo will be reading about 3% slower than normal so bearing in mind Scorpio speedos can read 10% over you probably have one of the most accurate speedos out there ;)

Might be worth double checking with your insurance company, it can invalidate insurance if you are not using manufacturer recommended tyre sizes.

Shouldnt be a problem though i wouldnt think.

Title: Re: Are these tyres the wrong size?
Post by tricky_dicky on May 6^th, 2009, 11:43am

Thanks Highlander, I am going to be changing the rear springs to heavy duty ones which lift the back up by about half an inch according to johnnycab so they should be alright. I dont want to bin 4 nearly new tyres.
I'd better check the size of the spare as well I suppose.

Title: Re: Are these tyres the wrong size?
Post by Jonnycab on May 6^th, 2009, 11:59am

Hi tricky, I think you miss-understood what I said. The heavy duty springs I fitted lifted the rear by almost 2 inches initially, but once they settled down it dropped by about half an inch. So the car still sits about an inch & a half higher than it originally did........I hope this makes sense :)

Title: Re: Are these tyres the wrong size?
Post by Highlander on May 6^th, 2009, 12:06pm

anything for an extra inch and a half Jonny ;)

Title: Re: Are these tyres the wrong size?
Post by Jonnycab on May 6^th, 2009, 12:50pm

}{....Yea, & it feels stiffer as well ;D

Title: Re: Are these tyres the wrong size?
Post by Highlander on May 6^th, 2009, 12:55pm

depends on your rubber i suppose }{ (Admin incoming)!

Title: Re: Are these tyres the wrong size?
Post by scorpio_man on May 6^th, 2009, 2:41pm

{} }{

Title: Re: Are these tyres the wrong size?
Post by gozz on May 6^th, 2009, 3:09pm

Ahhh ! those were the days :)

Title: Re: Are these tyres the wrong size?
Post by Jonnycab on May 6^th, 2009, 3:54pm

My wife says the ride has deffinately improved ;D

Title: Re: Are these tyres the wrong size?
Post by Highlander on May 6^th, 2009, 4:04pm

I'm quitting before I get deleted! }{

Title: Re: Are these tyres the wrong size?
Post by Simmo on May 6^th, 2009, 4:44pm

Wise move Stuart !! ;D

Title: Re: Are these tyres the wrong size?
Post by Jonnycab on May 6^th, 2009, 6:01pm

:-X :-X :-X........me too ;D

Title: Re: Are these tyres the wrong size?
Post by pinto on May 8^th, 2009, 3:55pm

Well, you know what they say - never buy cheap rubber as a blowout at high speed could be costly....... ;D

I use du..............nlop :P

On a more serious note.. :D

http://www.miata.net/garage/tirecalc.html

Use this to work out your sizes - its quite natty ;) - remember tyre manafacturers reccomend no more that +3/-5 % from stock size (although as highlander says, the scorp speedo is invariably -10% out anyway lol )

Must admit... the thought of some 225/30/20's on my scorp does appeal...... 8)

Title: Re: Are these tyres the wrong size?
Post by Jonnycab on May 8^th, 2009, 4:11pm

Here's another good site for comparing different tyre/wheel sizes.........

http://www.kouki.co.uk/utilities/visual-tyre-size-calculator :)

Title: Re: Are these tyres the wrong size?
Post by tricky_dicky on May 13^th, 2009, 7:53am

on 05/08/09 at 16:11:54, Jonnycab wrote:

Here's another good site for comparing different tyre/wheel sizes.........

http://www.kouki.co.uk/utilities/visual-tyre-size-calculator :)

Thanks I had a look and there is quite a difference in size in the two tyres. Think I might have to change the tyres.

Title: Re: Are these tyres the wrong size?
Post by Snoopy on May 13^th, 2009, 3:54pm

OK OK Fun over ! keep it on topic please

Snoopy