GR Yaris Weight reduction
- Thread starter peeler
- Start date
Spaceman_GR4
Obsessed member
- Nov 25, 2021
- 301
- 337
Battery.
Change seats for lightweight ones tho struggle to use back seats with fixed back buckets
This is probably the best way, I need to shed about 20kg reckon that’s a few tenths off the 0-60.A 5k run each day and a big poop before you go out
Sorry, a bit of a running joke with my bike racing mates
Bronson
Totally Hooked
Titanium exhaust should save 6kg on the GPF back and maybe a kilo or two on the OPF delete. But the cost of a titanium exhaust is about as much as doing a rear seat delete and lithium battery combined.
Lighter wheels are possible but you’re looking at max 2kg all round but the benefits of reducing unsprung mass can be quite significant. Lighter brake discs too. Pumaspeed do a front brake disc kit that they claim saves 1.75kg per corner - similar price as a lithium battery.
Lighter wheels are possible but you’re looking at max 2kg all round but the benefits of reducing unsprung mass can be quite significant. Lighter brake discs too. Pumaspeed do a front brake disc kit that they claim saves 1.75kg per corner - similar price as a lithium battery.
You have just over 30kg with the rear seats, trim and boot stuff.
CommitConfirm
Absorbed member
- Jan 5, 2022
- 73
- 76
Patiently waiting to see just how much of the factory rear seats delete trim from the GRMN Yaris we can buy.
Michael Knight
Totally Hooked
Fall 2022 - still bit time to wait..
TheManWithTheStick
Totally Hooked
I put lithium battery in and I'm sure the car feels lighter 
(prob imagining it though)
My last car had a carbon prop shaft so I can't help but wonder how much that would save on the Yaris
would cut down rotational mass by quite a lot I'd imagine.
(prob imagining it though)My last car had a carbon prop shaft so I can't help but wonder how much that would save on the Yaris
would cut down rotational mass by quite a lot I'd imagine.
Michael Knight
Totally Hooked
Yes - i felt it too!I put lithium battery in and I'm sure the car feels lighter
My last car had a carbon prop shaft so I can't help but wonder how much that would save on the Yaris
Prop shaft 10-15kg? Do the carbon ones last?
- Thread starter
- #12
Wow that’s a lot ! So with rear seat delete and race battery a very good saving
Greenthumb
Totally Hooked
Rear seat delete and race battery + round about 20l fuel.....
Ok and I have no water in the wiper tank.
Ok and I have no water in the wiper tank.
Michael Knight
Totally Hooked
nice not far from 1200kg...Rear seat delete and race battery + round about 20l fuel.....
Ok and I have no water in the wiper tank.
- Thread starter
- #15
That’s impressiveRear seat delete and race battery + round about 20l fuel.....
Ok and I have no water in the wiper tank.
Just don‘t install the rear seat delete kit, or you‘re gonna add another ~6kg to the car.Rear seat delete and race battery + round about 20l fuel.....
Ok and I have no water in the wiper tank.
Greenthumb
Totally Hooked
The passenger seat is going out this year.Just don‘t install the rear seat delete kit, or you‘re gonna add another ~6kg to the car.
TheManWithTheStick
Totally Hooked
It was OEM fitted on my last car so should last the life of it. I'd bloody hope so anyway cuz it won't be cheap!
- Thread starter
- #19
What’s removed , rear seat and all the bits around the battery?Just don‘t install the rear seat delete kit, or you‘re gonna add another ~6kg to the car.
Jip
Devoted member
I find running with no brake pad material or tire tread left helps, but also always running with hardly any fuel left. Keeps my wallet light. 
