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06-15-2006, 07:44 AM | #1 |
Yarii Hunter
Drives: 2007 Yaris Liftback and S13's Join Date: May 2006
Location: Austin, Texas
Posts: 437
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Ideal Offset? 15x7 ET42 Wheels
I'm hoping that some people out there have atleast some experience with the best offset for performance. I'm looking to buy Falken Hanabi 15x7 wheels, and they have a 42 offset. I still don't totally understand offsets, nor do i have much experience with the Yaris so could somebody let me know if this would be an ideal wheel?? I've been recommended 205/55/R15, but i might just go with 195/60/R15 (or maybe 195/55/R15 for a bit better gearing and more likely to fit under a lowered suspension)..
thanks guys! |
06-22-2006, 10:30 PM | #2 |
Podiatrist
Drives: Turbo IS300 Join Date: May 2006
Location: MA
Posts: 83
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I think you should choose what way you want to go with your car first.
If it's performance that you want...there are several types. For speed, a wider tire and bigger wheel will actually slow you down. For handling a wider tire will help you grip the road if done correctly. Wheel/tire size has nothing to do with gearing. Your overall wheel/tire diameter should be the same. As for offset, that's simply for fitment purposes. A higher offset sits further into the center of the car. A lower offset pushes the wheel out the opposite way. |
06-23-2006, 03:46 AM | #3 |
Yarii Hunter
Drives: 2007 Yaris Liftback and S13's Join Date: May 2006
Location: Austin, Texas
Posts: 437
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actually, overall gearing is affected by tire profile..but that wasn't the main reason i was going with those tires..partially it was about not wanting to go so wide as to hurt fuel efficiency from the extra road friction
i was more asking about a good offset for the Yaris specifically..maybe from a few people that have run 15x7 wheels.... |
06-23-2006, 07:03 AM | #4 | |
Podiatrist
Drives: Turbo IS300 Join Date: May 2006
Location: MA
Posts: 83
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Quote:
Hey, I don't mean to get off topic, but can you explain what you mean by overall gearing? How does tire profile affect it? |
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06-23-2006, 10:27 AM | #5 |
Drives: 2007 Yaris RS Silver Join Date: May 2006
Location: Ottawa Ontario Canada
Posts: 80
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Im looking at getting a pair of SSR 16's in gunmetal for mine. Not to big not too small.
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06-23-2006, 11:13 AM | #6 | |
Drives: BBM Yaris HB Join Date: Apr 2006
Location: Vancouver
Posts: 71
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Quote:
so a 205/55/15 tire would net a similar effect as a slightly higher final drive, than say a 195/55/15 or 195/50/15 tire. fyi, the yaris has a slighly shorter final drive ratio than the older echo i personally have upsized my tire sizing a bit, to get the taller gearing because i dont really care about the get up and go acceleration of the car, but the difference is may be 4%. so not that much of a difference at all. |
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06-23-2006, 12:55 PM | #7 |
Obsessive Detailer
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Does anyone know what is the stock offset for the Yaris?
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06-23-2006, 03:02 PM | #8 |
Only Happy When it Rains
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175/65 R14 = +39
185/60 R15 = +45
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Colin Chapman disciple |
06-24-2006, 12:02 AM | #9 | ||
Podiatrist
Drives: Turbo IS300 Join Date: May 2006
Location: MA
Posts: 83
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[B]
Quote:
When you buy wheels you have to get as close to the same overall diameter otherwise your speedo/odometer will be off. TRD_Yaris says that the tire profile affects gearing and I'm not understanding what he means. Quote:
You should include with width of the wheel when stating offset. A 8" wide on a 45 offset is 6mm different than an 8.5" wide with a 45 offset. |
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06-24-2006, 09:33 PM | #10 | |
Drives: BBM Yaris HB Join Date: Apr 2006
Location: Vancouver
Posts: 71
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Quote:
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06-25-2006, 02:26 AM | #11 |
maintenance of momentum
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The lower the offset you go with on yor car, the wider the track will be, and therefore there should a theoretical increase in handling ability of the car. however, if the offset is too extreme on the front wheels, it can cause the scrub radius to spike, basically nulling all benefits derived from the decrease in offset.
All that aside, I wouldn't got lower than +25 on a 7" rim in general for FWD applications. I plan on running 15x7.5 RS Watanabe cyclones with a +24 offset. Anything under a 20 will make you look like a low rider anyway. |
06-25-2006, 05:38 PM | #12 | |
Podiatrist
Drives: Turbo IS300 Join Date: May 2006
Location: MA
Posts: 83
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Quote:
If your choosing the correct tire size...how do you affect gearing. |
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06-26-2006, 11:46 AM | #13 | |
Drives: BBM Yaris HB Join Date: Apr 2006
Location: Vancouver
Posts: 71
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Quote:
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06-26-2006, 11:53 AM | #14 | |
Podiatrist
Drives: Turbo IS300 Join Date: May 2006
Location: MA
Posts: 83
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Quote:
I don't think you can affect gearing if you get the same overall diameter. There's more than just gearing when changing overall diameter. If you have an auto Yaris, it affects your shifting as well. |
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07-18-2006, 04:12 AM | #15 | |
Yarii Hunter
Drives: 2007 Yaris Liftback and S13's Join Date: May 2006
Location: Austin, Texas
Posts: 437
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Quote:
simple explanation: basically, if you took a tape measure and wrapped it around the tire along the tread..you would find the 195/60/r15 and 205/55/r15 are a bit longer than the stock 195/55/r15 's tread length..
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Thanks for all the help over the years, YarisWorld!!! |
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