I have a 245 35 19 on the front and a just replaced my rear 275 with a 285. Now I am running 245/285 combo. When I decending a hill at very high speeds tonight, I noticed a weird noise, like my VDC was going on (even though I had it turned off). Never really had this before when I turned it off. I got home and noticed my rears also had a bit more tire pressure (which could make the difference even bigger).

Is this a common problem with this set up.

I am running Toyo T1R

THOUGHTS???

 

FWIW I was considering the T1R which has a great reputation. If I remember correctly they tend to have a smaller circumfrence than other brands of equivalent size. My tire shop pointed this out and suggested a different brand to avoid any potential problems.

I'm not saying this is your problem but it could be based on what you describe.

The tire shop I'm referring to is Butler Tire in Atlanta who does Z's by the dozens along with all the exotics.