I have been searching all around for the best answer to this question.

I had originally assumed that 205/45-16 would be the best tire for the 16" Rotas I will be ordering, but I have noticed that a lot of peeps put 205/40-16 on too. Is it just looks over ride quality? Do peeps need the shorter height for bigger drops?

My teg has a 1.5" drop if that helps at all...

Thanks

 

If you live in an area that has bad roads, then I would suggest the 45 series. This would give your wheels that extra "cushion" by providing a little more sidewall and help prevent damage. There is nothing wrong with either size, it's just that a lot of people that were using 40 series, has gotten 45 series when it came to buying new tires.

 

I went with 40 series tires to remain as close as possible to the stock wheel circumference.

 

actually, the 45 series is closer...

stock tire size is 195/55-15

according to this tire size calculator, by running a 205/40-16 your speedometer will be 4.2% too fast. so if your speedometer reads 60mph, you're actually doing 57.5mph. however, if you run a 205/45-16, its only .8% too fast, so if you're speedometer says 60mph, you're actually doing 59.5mph.

cliffs notes: 45 series is closer to the stock wheel/tire diameter.

i run 45 on mine.

 

:werd: i always use that calculator before new wheel/tire purchase

 

The RS, LS & GS have 195-60 R14 tires from the factory. It was my understanding that for each inch in wheel diameter, the series profile should be reduced by a unit of 10. Hence my selection of a 205/40R16 tire.

Now in the case of the GSR, you are absolutely right, as they are fitted with 195/55 R15 tires from the factory.

....Interesting.... I oughta borrow a radar gun to verify my speedo accuracy. :thinking: