What's a warmer or colder plug?

[tricci]

I have read several times that woods riding can require a hotter spark plug to help with a bike running slightly rich.

What would be a hotter plug from a BR8EG. I thought that a BR7EG would be but I couldn't find one. Maybe I'm wrong. Can someone shed any light on this for me.

Thanks

 

[bigred455]

You are correct,as the number goes down on the plug,the hotter it is.

 

[Durt Cycler]

Yes the lower the number the hotter the plug is. But you gotta watch out when using a hotter plug cause the engine tends to run hotter and can cause a lean condition. If you need to run a hotter pulg then you can just run a BR7ES.