Hello All,

This may seem like a stupid question, but, I'm baffled as to why the tires on my 2018 IS 300 F SPORT are discoloured/brown around the edges. Each time I handwash my car, I pay special attention to the tires and use a tire brush.

I have attached a picture for reference.

Any advice would be much appreciated.

Thank you!

 

I have the same car as you and my tires do not look like that. I hand wash my car as well. Do you have a stiff, plastic low profile tire brush? I’d suggest a stronger APC to knock the brown residue off. Pressure washing may help a bit too.

 

Do you dress your tires after washing g them? If so, maybe try a different tire dressing. You could try a wheel and tire cleaner. A tire brush is an excellent idea.

 

That looks like dirt / brake dust on the tires... just wash them and use tire shine and be done with it!

 

That looks odd for sure...it almost looks like when you drive a tire ever so gently against a curb, and the cement basically scuffs the sidewall.
Usually some tire dressing will restore the black luster of the tire.
Any chance it gets driven on some odd surface we don't know about? Or even the automated tracks of a touchless carwash?

 

That **** is just oil from the tire manufacturing process seeping out IIRC. just get an APC [ie. super clean] and spray, let it dwell for few mins and then brush off. Old dressings also cause that

 

What he said. It's due to an additive during the tire manufacturing process to slow the degradation due to ozone, UV, etc. The additive, antiozonant, oxides over time and turns brown. It all just depends on exposure, the protectant used (or not used) and of course the tires themselves. Look up "tire blooming."

Every time I clean my cars/truck I use 303 aerospace and don't have that issue even in the blistering summers of Texas.

 

I've been using NO TOUCH tire shine for a while now, and it alleviates any discoloration I have on mine. My tires also get kinda brown after a few months. Tire shine is underrated - really makes the car look its best.

 

Thanks for your response. I recently purchased a pressure washer and used it this past Saturday, but will definitely try a stronger APC.

 

Thanks for your response and suggestions! I'll look into purchasing a more effective tire dressing.

 

Thanks for your response! I will definitely do that.

 

Thank you for your response! I don't drive on any odd surfaces or take my car to the carwash, but I'll definitely look into getting a more effective tire dressing.

 

Thank you for your response and suggestions, I appreciate it.

 

Thank you for explaining this; I really appreciate it. I'll look into the most effective tire dressings/APCs.

 

Thank you for your response and suggestions, I appreciate it! I'll be sure to look into the No Touch tire shine.