2017 BRZ Manual Crusing RPM - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

mjanmohammad · 08-15-2017, 11:32 PM

Correction: its like 86mph at 4k rpm, and 68 at 3k rpm.

spike021 · 08-15-2017, 11:53 PM

Quote:

Originally Posted by mjanmohammad

Correction: its like 86mph at 4k rpm, and 68 at 3k rpm.

Yeah, I drove the freeway today and double-checked the numbers. 68-70mph is definitely about 3k rpm. Higher goes 3500-4000rpm.

Guff · 08-16-2017, 01:50 AM

Quote:

Originally Posted by mjanmohammad

You can't set a cruise speed above 4k rpm, but you can set it below 4k and use the stalk to raise the speed.

Got it, same as the old cars then. I wonder if that's supposed to be some sort of a safety feature?

qqzj · 08-16-2017, 01:20 PM

A much more efficient way of asking the same question is to just asking about the 6 gear ratios and diff. ratio. It will be very helpful if somebody can list all of them. It is widely known that the 17 has a smaller diff ratio. Not sure whether they changed gear ratio to compensate. I have a 13, and the differential final ratio is already too big for me as DD, I am actually thinking use a slight larger tire to lower the ratio. I do not need to be fast, just want to make the car less 'jerky' in the 1st gear.

I am actually thinking about using 225 45 R17 tires on stock wheels. The overall circumference is about 1.4% larger, i.e., less RPM at given MPH and slightly (5%) increase in sidewall to make the car more forgiving on harsh road surface. Has anybody tried this? Helpful comments will be greatly appreciated. Thanks.

LudwigMiles · 08-16-2017, 01:35 PM

I always forget there is a 6th gear.
I am often cruising in 5th.

spike021 · 08-16-2017, 02:06 PM

Quote:

Originally Posted by LudwigMiles

I always forget there is a 6th gear.
I am often cruising in 5th.

I've actually done this a bit recently and just stuck in 5th longer rather than going right to 6th.

08-16-2017, 01:20 PM	#18
qqzj Senior Member Join Date: Sep 2013 Drives: MDX, Camry Location: SF, CA Posts: 399 Thanks: 54 Thanked 69 Times in 44 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	A much more efficient way of asking the same question is to just asking about the 6 gear ratios and diff. ratio. It will be very helpful if somebody can list all of them. It is widely known that the 17 has a smaller diff ratio. Not sure whether they changed gear ratio to compensate. I have a 13, and the differential final ratio is already too big for me as DD, I am actually thinking use a slight larger tire to lower the ratio. I do not need to be fast, just want to make the car less 'jerky' in the 1st gear. I am actually thinking about using 225 45 R17 tires on stock wheels. The overall circumference is about 1.4% larger, i.e., less RPM at given MPH and slightly (5%) increase in sidewall to make the car more forgiving on harsh road surface. Has anybody tried this? Helpful comments will be greatly appreciated. Thanks. Attached Images Last edited by qqzj; 08-16-2017 at 01:31 PM.

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08-16-2017, 01:35 PM	#19
LudwigMiles Banned Join Date: Jul 2017 Drives: '13 BRZ Location: NY Posts: 232 Thanks: 17 Thanked 53 Times in 28 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I always forget there is a 6th gear. I am often cruising in 5th.

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