Nitto Terra Grappler 285/70/r18

[TEO314]

anyone have theses at this size, and i wanna get rid of my badyears (265/70/r18) i wanna put NITTOS on but how big can u go without rubbing and what tire size keeps the same size diameter? and are the nittos quite over the highway and around town?

Tony.

[92TripleBlack]

Originally Posted by TEO314

anyone have theses at this size, and i wanna get rid of my badyears (265/70/r18) i wanna put NITTOS on but how big can u go without rubbing and what tire size keeps the same size diameter? and are the nittos quite over the highway and around town?

Tony.

Those would rub quite a lot. They are 34" in diameter. And yes, they are more quiet and nicer ride than the stock junk they slap on at the factory.

They don't have an 18" that is the same size, 32.8".

Here's your conversion.

285=width in millimeters
70=% of width the sidewall is tall from rim to tread
18=rim width

In your case, its 285X0.70/25 X 2 +18=33.96" or 34"
Mine rubbed a little and I used a heat gun to correct.
305X0.55/25X2+20=33.42
The largest is really 305-50-20, 285-65-18, or 295-70-17.
Wider or taller and you start to rub.

You may be able to get away with them with the heat gun trick or with a PRG level.