tyre size for unions

russell brown · 3rd May 2011, 20:42

I have a set of 225 50 16 tires from a car I'm breaking they are pretty new, will these fit my unions which have bald 215 55 16.
Many thanks Russell.

Arctic · 3rd May 2011, 20:45

Hi Russ they should do as it is the 16in part that counts i think.

pab · 3rd May 2011, 21:11

The extra width will give you more road noise and dropping the profile will result in loss of comfort,but going back to your original question..they will fit

russell brown · 3rd May 2011, 22:20

Hoping to improve grip
Hoping to not losw to much comfort to bw fair good ride to start with and profile not a massive stop. Anyway more a cost cutting exercise really , using what I got instead of spending . Still out of work so price is priority at min

Clickernick · 3rd May 2011, 22:58

Now i could be wrong here but if the overall diameter is smaller due to the ratio difference, wont the speedo be out?

Also the rim width may not be suitable for the 225 width of the tyre mentioned,

Not to sure on these ideas so please correct me if i am talking tosh

russell brown · 3rd May 2011, 23:16

I understand that overall diameter will affect speedo readings however given how small a difference we ate talking here and it really is a small difference I'm not concerned how much it will affect my driving with the speedo affected . It's the tyre width difference that is my query really but you would be amazed the amount of lads putting mg 18 s on and not realising the speedo is out ...

ardvark · 4th May 2011, 11:32

Hi Russel,
I had a similar question I asked myself a while back. Union wheels have 215 tyres and if you put 225 tyres on them you'll have wider tyres and with them sticking out further they stand a good chance of catching on the wing lip when the suspention goes up and down causing damage to the tyre and worse case scenario a blowout which nobody wants. Personaly I'd advise against it.

Al

Jake · 4th May 2011, 11:35

Cant see how it would potentially catch the arches, bearing in mind that ZT's all come with 225's?

MangoMan · 4th May 2011, 14:24

Hi, they will fit ok with no real risk of damage at all.
The only concern I would have is that your rolling circumference will be reduced slightly thereby increasing your revs at the same speed thereby increasing fuel consumption. Also I find they already rev quite high as it is. If they were 55 ratio at 225 it would be better. You will be safe though because your speedo will over read even more, at an indicated 70 you will more than likely be doing closer to 60....! Check it with your satnav.
Ciao.

russell brown · 4th May 2011, 17:48

Tbh thats a fair point I will see my local garage about swapping or px for 225 55 16 as long as wider tyre will fit wheel that removes the problem of engine reving higher , mind you might make it quicker low end which is where its lacking

Quote:

Originally Posted by MangoMan

Hi, they will fit ok with no real risk of damage at all.
The only concern I would have is that your rolling circumference will be reduced slightly thereby increasing your revs at the same speed thereby increasing fuel consumption. Also I find they already rev quite high as it is. If they were 55 ratio at 225 it would be better. You will be safe though because your speedo will over read even more, at an indicated 70 you will more than likely be doing closer to 60....! Check it with your satnav.
Ciao.

3rd May 2011, 20:42	#1
russell brown Loves to post mg zt cdti,mgf steptronic, citroen dispatch, ssangyong musso Join Date: Aug 2010 Location: dudley Posts: 382 Thanks: 2 Thanked 0 Times in 0 Posts	tyre size for unions I have a set of 225 50 16 tires from a car I'm breaking they are pretty new, will these fit my unions which have bald 215 55 16. Many thanks Russell. __________________ I wish I was rich instead of sexy

3rd May 2011, 20:45	#2
Arctic Give to Learn Freelander 2 Join Date: Aug 2010 Location: West Midlands Posts: 18,716 Thanks: 1,155 Thanked 6,407 Times in 3,874 Posts	Hi Russ they should do as it is the 16in part that counts i think. __________________ Arctic Givology Learn to Give Everything is Achievable ad altiora tendo. Check out our Nano meet dates http://www.midlandsnanomeets.co.uk/ http://www.the75andztclub.co.uk/index.php?thepage=howto " You do the work , we supply the expertise "

3rd May 2011, 22:20	#4
russell brown Loves to post mg zt cdti,mgf steptronic, citroen dispatch, ssangyong musso Join Date: Aug 2010 Location: dudley Posts: 382 Thanks: 2 Thanked 0 Times in 0 Posts	Hoping to improve grip Hoping to not losw to much comfort to bw fair good ride to start with and profile not a massive stop. Anyway more a cost cutting exercise really , using what I got instead of spending . Still out of work so price is priority at min __________________ I wish I was rich instead of sexy

3rd May 2011, 22:58	#5
Clickernick Posted a thing or two Rover 75 Connie SE Tourer Triumph Street Triple R Join Date: Aug 2009 Location: Bletchley, Milton Keynes Posts: 1,163 Thanks: 75 Thanked 91 Times in 65 Posts	Now i could be wrong here but if the overall diameter is smaller due to the ratio difference, wont the speedo be out? Also the rim width may not be suitable for the 225 width of the tyre mentioned, Not to sure on these ideas so please correct me if i am talking tosh __________________ Real walnut interior. Original refurbished Forked Spokes 16” with Michelin Primacy 4 rubber, Pioneer AVH-Z9200DAB double din Wi Fi phone integration. Retrofitted twin front horns. 160 re-map. Revotec fan. Silicone intercooler hoses and ‘O ring’ replacement. Top hose thermostat. New walnut and smokestone steering wheel with cruise upgrade. Brembo Brakes. Ceramic coated rear Exhaust. L/engine mount, Hydramount, Bosch MAF. Focal Access Drivers and Focal Amp.

3rd May 2011, 23:16	#6
russell brown Loves to post mg zt cdti,mgf steptronic, citroen dispatch, ssangyong musso Join Date: Aug 2010 Location: dudley Posts: 382 Thanks: 2 Thanked 0 Times in 0 Posts	I understand that overall diameter will affect speedo readings however given how small a difference we ate talking here and it really is a small difference I'm not concerned how much it will affect my driving with the speedo affected . It's the tyre width difference that is my query really but you would be amazed the amount of lads putting mg 18 s on and not realising the speedo is out ... __________________ I wish I was rich instead of sexy

3rd May 2011, 21:11	#3
pab Banned MG ZT V6 190+ Join Date: Sep 2008 Location: Leeds Posts: 33,223 Thanks: 41 Thanked 1,614 Times in 1,416 Posts	The extra width will give you more road noise and dropping the profile will result in loss of comfort,but going back to your original question..they will fit

4th May 2011, 11:32	#7
ardvark Al 75 CDTI Tourer Auto Join Date: Mar 2009 Location: Studley Posts: 1,457 Thanks: 1 Thanked 69 Times in 48 Posts	Hi Russel, I had a similar question I asked myself a while back. Union wheels have 215 tyres and if you put 225 tyres on them you'll have wider tyres and with them sticking out further they stand a good chance of catching on the wing lip when the suspention goes up and down causing damage to the tyre and worse case scenario a blowout which nobody wants. Personaly I'd advise against it. Al __________________ ARDVARK

4th May 2011, 11:35	#8
Jake Banned 2004 75 Contemporary SE Tourer, 2005 (55) Pearl Black Conn. SE Tourer. Join Date: Jul 2009 Location: Lincoln Posts: 2,129 Thanks: 0 Thanked 0 Times in 0 Posts	Cant see how it would potentially catch the arches, bearing in mind that ZT's all come with 225's?

4th May 2011, 14:24	#9
MangoMan This is my second home Looking.... Join Date: Oct 2010 Location: England Posts: 10,911 Thanks: 862 Thanked 1,111 Times in 868 Posts	Hi, they will fit ok with no real risk of damage at all. The only concern I would have is that your rolling circumference will be reduced slightly thereby increasing your revs at the same speed thereby increasing fuel consumption. Also I find they already rev quite high as it is. If they were 55 ratio at 225 it would be better. You will be safe though because your speedo will over read even more, at an indicated 70 you will more than likely be doing closer to 60....! Check it with your satnav. Ciao. __________________ *Regards, Bill - (MangoMan).* (Member 00854) http://i1110.photobucket.com/albums/...d.jpg~original