Tyre size

 Hi all,

I was in need of new tyres and put a mates near new tyres onto my Holden rodeo.

Now they are One size bigger than the standard for my rodeo

These tyres are going to show that my speedo is lower then what I am actaully doing? Or is it the other way around? 

Cheers James 


stevebw23's picture

Posts: 155

Date Joined: 12/11/11

yeah i think thats correct

Wed, 2012-03-07 18:26

yeah i think thats correct mate, if your speedo says you're doing 100 you may be doing 105 or something like that. shouldnt be too much though. if you have access to a gps you could check it's speed with that

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fatboyholla's picture

Posts: 285

Date Joined: 20/05/11

i didnt think that it

Wed, 2012-03-07 18:36

i didnt think that it mattered with fairly modern cars or have i been lead down the garden path

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worst fisherman ever

Posts: 87

Date Joined: 02/09/11

 Was showing just then that

Wed, 2012-03-07 19:26

 Was showing just then that my speedo was about 5-8 km faster then GPS.

Im guessing you can't change speedo reading right? 

 

 Cheers James 

davidbland50's picture

Posts: 392

Date Joined: 24/07/11

That's not all

Wed, 2012-03-07 20:09

James,

It is not just whether your speedo is correct, it matters what speed and load rating your tyres are and that they comply with the manufacturers specs. The specs can usually be found on the inside frame of the driver's door. This is very important because if your tyres don't match up to the manufacturers specs and god forbid you have an accident, your car is considered unroadworthy and therefore UNINSURED!! Don't treat this lightly, as the police do vehicle checks before holidays and Easter is coming up.

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sherbert's picture

Posts: 4717

Date Joined: 10/09/06

Mine is higher by 10 ks

Wed, 2012-03-07 20:28

And 1st gear is taller, I 285 /75/ 16 on my pardo

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Assassin landbase fishing club

Posts: 87

Date Joined: 02/09/11

 Cheers david!!! Just had a

Wed, 2012-03-07 20:33

 Cheers david!!! 

Just had a look then and it says it's designated for 195-14c

And the ones I put on today are 225-15c

Will have to change them back!!!

Thanks for your help!

 

Cheers James

Faulkner Family's picture

Posts: 18026

Date Joined: 11/03/08

 before you change them back.

Thu, 2012-03-08 04:55

 before you change them back. give the insurance company a call. there are many cars out there with tyres that are slightly bigger than what they should have. not saying that David is wrong but you could be ok, as long as all 4 wheels have the same size on them. if different then you would definatly need to change

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RUSS and SANDY. A family that fishes together stays together

Posts: 5796

Date Joined: 18/01/12

 The rules are something

Thu, 2012-03-08 20:08

 The rules are something along the lines of 15mm larger rolling diameter and 25mm extra width is allowable without an engineers certificate

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 Give a man a mask, and he'll show you his true face...

 

 

The older you get the more you realize that no one has a f++king clue what they're doing.

Everyone's just winging it.

 

Posts: 87

Date Joined: 02/09/11

 Thanks for the replys I took

Thu, 2012-03-08 20:46

 Thanks for the replys 

I took them off before I read  your commentsb:(

 

THanks anyway,! 

didz's picture

Posts: 20

Date Joined: 10/12/07

Probably a bit late now but

Mon, 2012-03-12 00:41

Probably a bit late now but an easy to use site for tyre size comparison and speedo difference ect.

 

http://www.1010tires.com/tiresizecalculator.asp