How to find out what size tyre fits rim?

Submitted: Saturday, Feb 20, 2010 at 22:09
ThreadID: 76192 Views:3677 Replies:3 FollowUps:4
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Hi
My son has just bought a very nice 1999 Rodeo dual cab 4X4 ute. Current tyres are 205R16. They are on 16 inch alloys which I believe are original equipment. I have the chance to buy some Aussie made Bridgestones at a good price through a friend. The choices are the 205R16 D694 , or the 235/70R16 D694. I believe both of these would fit OK. My son would like a slightly bigger tyre. Would a 245/70R16 D694 fit onto the rims. The circumference is (on my calculation) 44 mm bigger and the diameter 14 mm bigger which should only result in a speedo error of about 2%.
I am aware of the various sites comparing tyre size but the question is, would they fit the Rodeo rims?
Thanks for any help.
Cheers
Dave
2004 GXL TD Cruiser

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Reply By: Member - Charlie M (SA) - Saturday, Feb 20, 2010 at 22:26

Saturday, Feb 20, 2010 at 22:26
Hi David
You will need to know wheel width. 205R16 is on a 6.0inch width as standard, this size wheel can go to 225/75R16. A 245/70R16 need a 7.0inch wheel
Cheers
Charlie
AnswerID: 405113

Follow Up By: Member - David T (SA) - Saturday, Feb 20, 2010 at 22:39

Saturday, Feb 20, 2010 at 22:39
Thanks Charlie
I think he may have to be happy with the smaller tyres.
Cheers
Dave
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Reply By: Shaker - Saturday, Feb 20, 2010 at 23:06

Saturday, Feb 20, 2010 at 23:06
Look at the tyre placard affixed tot he vehicle, if the size is on it, it is legal, if it isn't, it's not.

AnswerID: 405117

Follow Up By: Member - Brian H (QLD) - Saturday, Feb 20, 2010 at 23:57

Saturday, Feb 20, 2010 at 23:57
Agree I have 225/75/16 on mine and thats as big as I can go "legal" anything bigger no go, some tyre places would not fit the tyre if not legal.

Thanks
Brian
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Reply By: Member - Phil G (SA) - Sunday, Feb 21, 2010 at 09:23

Sunday, Feb 21, 2010 at 09:23
Dave,
225/75R16 are the common "wider" tyre that are the dameter and are available in LT construction with a load index of 115. They are 10mm greater diameter than what you've got. Load Index is the most important legal requirement, and the 235/70 are only 105 - might not be enough for your vehicle - check the placard.

Nobody gets sprung for going a little oversize - look around at whats on the road. The 15mm rule is ridiculous and is designed for smaller cars. Its been scrapped on the latest ADRs, but the states take time to follow suit.

Your rims are probably 6" wide, so 235 wide tyres are as wide as you can go.
AnswerID: 405155

Follow Up By: Member - David T (SA) - Sunday, Feb 21, 2010 at 10:38

Sunday, Feb 21, 2010 at 10:38
Thanks Phil
Should have rung you direct but didn't want to hassle you.
Cheers
Dave
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Follow Up By: Member - Phil G (SA) - Sunday, Feb 21, 2010 at 13:36

Sunday, Feb 21, 2010 at 13:36
Hehehehe
I wouldn't have replied if I realised it was you:-)))
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