# Ontario Safety Certificate

**URL:** <https://forums.speedlife.net/t/ontario-safety-certificate/107782>\
**Category:** SON240sx Automotive\
**Created:** [July 19, 2007, 4:11am UTC](https://forums.speedlife.net/t/ontario-safety-certificate/107782 "2007-07-19T04:11:18Z")\
**Posts on this page:** 1\
**Showing post:** 16

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**Author:** ![schwiin\_27](https://avatars.discourse-cdn.com/v4/letter/s/ecb155/32.png) [@schwiin\_27](https://forums.speedlife.net/u/schwiin_27)\
**Post date:** [July 20, 2007, 3:06pm UTC](https://forums.speedlife.net/t/ontario-safety-certificate/107782/16 "2007-07-20T15:06:16Z")

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> [@Dos \> MaximaSE98](https://forums.speedlife.net/t/dos-maximase98/13338/5):
>
> No, it is gay. They do have to match. It falls under standard #33
> 
> It’s meant to keep you from running 4 completely different tires. But most mechanics interpret as fronts have to match, rears have to match.

LOL thats why i say that because im an apprentice and thats the rule of thumb at my shop

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