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GR86 General Topics (2nd Gen 2022+ Toyota 86) General topics for the GR86 second-gen 86 |
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04-14-2024, 11:15 PM | #15 |
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Do you still have your spare?
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04-16-2024, 10:51 AM | #16 |
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planned on salvaging my spare from gen 1 when I move to gen 2. no timeline on that tho. pickins are still slim
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04-22-2024, 06:13 PM | #17 |
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My 2017 '86 has no foam spacer under the tire. Toyota's owners manuals seem to bear this out; the later versions that cover TRD edition, they show the foam spacer only for cars that have a 17" spare wheel, while 16" spares do not have it. I haven't checked Subaru's equivalents, but expect they would be the same.
The parts diagrams I see for this part number seem to indicate it's a sheet metal 'volcano' that's spot-welded into the bottom of the spare tire well to provide the nut the retain bolt threads into. Presumably they wanted this nut higher to allow a shorter bolt for more accurate positioning. It's shown on the same figure as other sheet metal components forming the trunk compartment. The need for the spacer isn't so much for the respective tires being 16" and 17", but rather that the 17" rim for Brembo brakes is domed out much more to clear the brakes. So with the tire (rubber) resting on the trunk floor, the centre of the Brembo spare wheel would have to poke through the floor while the regular spare doesn't. The spacer is to bring everything up with the Brembo spare. Odd observation: between the 16" and 17" spare wheels, the 16" is a closer match to stock 17" tires' effective diameter. The 17" spare wheel is the closer match to the stock 16" (JDM, Australian, China, maybe other makets) tires. Additionally, the 17" spare from other Subaru models might not necessarily work. I'm thinking specifically of the spare for Brembo-equipped WRXes; some people assume since the WRX has Brembo calipers, the spare must work for BRZs with Brembos too. However, what they're missing is that the instructions for the WRX are to put the spare wheel on the rear, and install the fuse that puts the car into FWD mode. I imagine its the same story with other AWD Subarus. So unless somebody has a way to put their BRZ into FWD mode, I wouldn't simply conclude some other Subaru wheel works. It might anyway, it might not, but you really need to test fit to know for certain, and not just deduce that it does. Last edited by Luns; 04-22-2024 at 06:24 PM. |
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04-23-2024, 06:02 PM | #18 | |
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04-25-2024, 10:54 AM | #19 | |
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Not trying to be an A$$, but unless specified in the manual for some specific reason I think this is incorrect, and potentially dangerous advise from a driving dynamics standpoint. Since the front tires handle much higher loads from braking, turning and usually carry the higher percentage of a vehicle's weight (since the engine is generally in the front), it is best NOT to install a temporary spare on the front. I've always been under the impression if you get a flat on the front, that it is best to move a rear tire to the front, and install the temporary spare on the back. As long as you are not trying to accelerate swiftly, or drive aggressively, with a temporary spare on the back of a RWD car, the small temporary spare is better suited to the loads the rear wheels will encounter. And, although most seem to ignore it, it is best to remember that a temporary spare is only meant to get you off the highway and to a repair facility, not to drive around on for days (or more) till you repair or replace the damaged tire. EDIT: Gen 2 cars don't come with spare tires, so there is no mention in the manual. Owners manual for Gen 1 cars does indicate to "Install the compact spare tire on a front wheel." as OP has noted. Have to assume this is because the temporary spare is of a smaller diameter, and the concern for wheel speed difference possibly damaging the limited slip diff. When I'm wrong, I'll admit I'm wrong, but for those with other cars, know this is not a general rule of thumb for all vehicles, check your manual.
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04-25-2024, 02:53 PM | #20 | ||
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That said, it is a general rule of thumb for vehicles that have limited slip differentials to not run spacesaver wheels where the differential is. (Note that there are front wheel drive vehicles with limited slip transaxles, so sometimes you do not put them on the front...). Any difference in circumference (larger or smaller) between the wheels connected to a limited slip differential has the potential to cause damage: For clutch type differentials it will wear out the clutches. For all types of limited slip it will generate additional heat and can lead to breakdown of the oil.
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04-25-2024, 06:16 PM | #21 | |
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05-01-2024, 09:55 PM | #22 | |
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Do you or anyone know which side of the Yokohama t145/70d17 is inside and quick outside (or are they symmetrical)? Last time Mavis did it wrong and I had to remind them. Sent from my iPhone using Tapatalk |
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05-02-2024, 11:55 AM | #23 | |
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Got everything done Thanks for everyone helping here! Sent from my iPhone using Tapatalk |
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05-03-2024, 02:20 AM | #24 |
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GR86s have never had a spare provided in Australia, it was launched here with a can of goo.
The BRZ Coupe (base) and Coupe S (premium, but really just heated seats) in Australia both have a full size spare wheel in the boot, which for many of us is a point in the BRZ's favour. Weirdly, probably as a cost and/or weight savings tactic, the BRZ tS here loses the spare wheel, which seems a bit crummy. |
05-03-2024, 12:17 PM | #25 | |
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I do wish I could fit a full size spare in the space in the trunk, that would be ideal.
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05-05-2024, 06:29 PM | #26 |
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I hear you Overdrive... Must have had about 20 flats in my lifetime, all were nails/screws that could be pulled and plugged. The only side-wall puncture I saw was done to someone else with a knife (I think) and afflicted all 4 tires. Having said all that, I am as paranoid as you are. So I also have a spare doughnut in the trunk... I mean why not :-)
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05-05-2024, 09:31 PM | #27 |
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Yep, I've been there with no spare tire, for 88,000 miles in a Miata.
Never had a flat tire on the road. Each morning before leaving the motel, I would check the tires and tire pressure. However, I will admit, that I do feel better, having a spare tire, with my FR-S. |
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