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Lightest Stock Size Wheels
I'm looking for the lightest wheels with the exact same width and offset as the stock 17s. Feel free to list 18s too for anyone looking for those. This doesn't seem like a difficult find but searching through old posts some wheels are no longer available and others are 8" wide or slightly different offset. Coming up empty searching retailers too. Am I being silly wanting exactly 48mm offset?
I just want bronze wheels that are lighter than stock but don't change the tire shape or suspension geometry. |
Rpf1 17x7.5 et48 silver 6.93kg 3797758048SP
Rpf1 17x8 et45 gold 7.1kg (tyre rack), 7.3kg (oem brochure) 3797808045GG Tc105x titan 17x7.5 et45 6.8kg OZ Alleggerita HLT 17x7.5 et48 7kg W0182320176 BBS RF 17X7 et48 6.4kg BBS RF 17X7.5 et48 6.6kg Ce28n 17x7.5 et50 6kg Ce28sl 17x7.5 et48 6.8(unconfirmed)kg Ssr gtf01 17x7.5 et48 7kg (potentially discontinued?) Sgd630 Advan tc4 17x7.5 et45 7.5kg sgd537 stock is 7.5 et48 so i exercised some +/- hahaha. your best bet is OZ Alleggerita, many colours avail in tire rack. |
I thought stock is 7" wide. It seems like offsets between 43-50mm are okay.
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As others have already pointed out, gen.2 stock wheels are 7.5" in width. Won't hurt to consider 17x8 either. It will also be better for 225/45R17 tires when inevitably you change your tires from stock. Also note that stock Primacy HP look narrower than many other tires in the same dimension. 225/45R17 SX2's will look less stretched on 17x8 than stock tires are on stock wheels. |
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How about these https://www.toyota.com/content/dam/t..._Ebrochure.pdf Slightly wider fitment by 5mm but Toyota are recommending it and only 17lbs , I’ve not seen a part number yet but look the same as the TRD ones sold for the GT86 |
Thanks for the suggestions guys. It's weird that all my searches came up with 7.0" width for the 2nd Gen.
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For the price and the weight, it's pretty hard to beat RPF1s...
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It's cheaper right now, and might be stronger. Haven't compared the weight though. |
You limit your options trying to keep the same offset. One of the lightest wheels available...
17x8 ET42 TWS T66-F 13.93 lb These are labelled specifically for 86/BRZ fitment https://www.tws-forged.com/tws_t66-f.html |
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May I ask why you need lightest wheels possible?
Are you ok to potentially sacrifice the strength of the wheel just trying to chase down the mythical "lightest wheel = fastest acceleration"? Are you really going to feel the difference of a few % worth the risk of bending the wheel on every pothole? |
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Also slightly compromised suspension geometry => slight negative impact on steering feedback. Also arguably better esthetics. |
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Seems the Enkeis are about 2lb lighter for 17x9 (dependent on offset). And the change in steering feel by going for a more aggressive offset is a great point: I had a set of PF-01s 17x8 +35, and the first thing I noticed was how the new wheels worsened steering feel/responsiveness. |
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Also, would there be a benefit to equalizing track width front to rear? For example, running something like +43 in front and +48 at the rear (or +41 and +46 to take advantage of the lower offset limit)? |
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As an example, there is this nasty area in the "left turn pocket" at one of the intersections near my home where I frequently need to stop on a red light. With stock wheels and tires it's just annoying, but with wider tires on lower offset wheels (et37 in my case) the steering wheel tries to turn left because of those bumps, so I have to hold it while stopping the car. On the flip side, I know people who have successfully tracked cars with et30 effective offsets and set some very decent lap times :P Quote:
That being said, perhaps a better strategy would be to maximize grip by maximizing the track width on both ends individually (depending on the regulations, geometry of the car and suspension, tire size, scrub radius considerations, etc.) and then fine-tune the balance with anti-roll bars. |
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17 lbs is plenty good.
If I were dailying the lightest wheels possible where I live, I'd be replacing them frequently because roads are that bad. If I were tracking more often, I'd also have to think about replacing them more frequently. And wheel strength is important on track too (not just weight). As it is, I use what are essentially tarmac rally wheels which are not the lightest but very strong. RPF1s are a good all-around choice on the lighter side and should hold up well in a 17 inch size. - Andrew |
Speaking of how offset affects suspension and steering geometry: It's weird that Toyota settled on 48mm for the stock wheels but 43mm for the GR accessory wheels. I get the benefit of wider track. How it lines up with the fender and how it works with the suspension and steering is an unknown but you'd think one would be better than the other in those categories and that's the size Toyota would use.
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So the drawbacks from a slight change in scrub radius are offset by the benefits of running a wider track (more grip), correct? That means it would be more beneficial to run the lowest allowed offset (+41) at the front and rear and fine tuning with sway bars? Just want to make sure I'm understanding correctly. |
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The downsides or change in steering feel are subjective. What's best is thus subjective. Most people won't actually notice the increased levels of grip, but neither will they notice the change in steering feel from widening the track by just a few mm. They might start noticing at +10mm per side or so. |
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A more conservative shift (like going to +43ET) would probably give you the grip benefits of wider tires, while also maintaining more steering feel. |
Looks like 17x8 +43/+45 is the safe bet for stock suspension then? I was confused on the setup but I just want a little better figment at stock suspension for a while. Going to go 17x8 with either +45 or +43 in a wheel I like wrapped in 225/45r17. Am I missing something here?
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Another vote for hypergrams. They have been my track wheels. All has been good and they look better than RPF1s
Sent from my Pixel 5a using Tapatalk |
ET of the 17" GR86 wheels
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Thank you. Car is due to arrive at dealer next week..... so excited. |
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And you'll need to pay double again if you eventually need replace one or a few due to some unexpected track/highway nastyness. And will you actually see enough of a performance benefit to justify such a difference in price? |
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I'm going for feel. What these cars are all about imo. And i can afford it if anyone questions my thought process. Worth it to me. Im not an exterior decorator. I'd rather add lightness over anything else. Former shifter kart racer so some of us can tell and enjoy the minor differences even if others can't. 3/4 have curb rash. Bought to use, not post.�� |
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Crappy roads where I live does not always work out for lighter wheels.
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I used Enkei RF1 before, but it bent after going through a pothole at moderate speed (less than 20mph). No problem with the TE37 so far. I also installed 2-piece front brake rotors, saving another 4.9lb per corner, but that's another story. Go for the TWS T66-F if you can afford them (and you will be my idol)! |
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RPF1s will bend. Personal experience.tire weight is a big deal too. |
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