It means your tyre was manufactured on the 42nd week of 2007.I suppose you bought YOM2007 Latio?
Yes, u r right Clarence YOM2007 latio, this 4207 is spare tire. 2307 for 2 right side wheels, and 2407 for 2 left side wheels. BTW, u know what is the yellowish around rim tub?
Does anyone know what that yellowish around the rims tub is It happened to two of my wheels the day I collected my car.
Are you refering to the stain around the air valve on the rims?That is brake dust but I am surprised how so much brake dust could accumulate on a brand new car on collection day.Very likely your car had a high delivery mileage and the brake dust was not cleaned off.What was your car's mileage upon delivery to you?
Looks like brake dust to me.Tyre air leakage will not cause such stain.It's possible to get massive brake dust if one does spirited driving and frequent hard braking, which is how those Formula 1 wanabe drivers will likely drive your Latio.
Probably just the 2 front wheels got this stain?Rear drum brakes emit very minimal brake dust.