Andy's Tuning SKY:

話說研究至今...S2K最難搞的就是... 鋁圈... 原廠offset, J值等加上可以變化的可能性遠大於小白... 因此花費不少時間來尋找資料

今天先來記錄一下S2000鋁圈的升級公式, 資料是從美國 www.s2ki.com 所提供 Wheel Fitment Guide, Look here for information on offsets

S2000升級最怕就是...磨到葉子板, 但以台灣比較找的到的鋁圈來講, 要想不磨到, 老實說還滿危險的, 美國這邊提供幾個基本升級方案, 翻譯如有不好, 請見諒...

首先來看看原廠S2000的規格

 For reference, the OEM MY00-03 (AP1) wheel sizes and offsets are as follows: AP1的鋁圈尺寸

Front:
16" x 6.5", +55 offset, 205 tire
Rear:
16" x 7.5", +65 offset, 225 tire

and the OEM MY04+ (AP2) wheels are as follows: AP2鋁圈尺寸

Front:
17" x 7.0", +55 offset, 215 tire (有人說7J, 也有人說7.5J, 不過我認為是7.5J)
Rear:
17" x 8.5", +65 offset, 245 tire (255 on the S2000 CR)

For the front: 前輪
Offsets lower than +43 are not recommended on the front because a very narrow tire would need to be used to avoid rubbing. 不建議前輪安裝offset值超過ET43的圈, 因為你的胎寬選擇將會變成非常的小, 才不會磨擦到內龜或葉子板
+43 to +47 offset: 205 tires, 6.5" - 7.5" wide wheel
+48 to +52 offset: 215 tires, 7.0" - 8.0" wide wheel
+53 to +57 offset: 225 tires, 7.0" - 8.0" wide wheel
+58 to +62 offset: 235 tires, 7.5" - 8.5" wide wheel
+63 or higher offset: 245 tires, 7.5" - 8.5" wide wheel

For the rear: 後輪
Offsets below 40 are not recommended for the rear because a tire narrower than the stock tire would need to be used to avoid rubbing. 不建議安裝offset值超過ET40的圈, 理由與前輪相同!!
+40 to +44 offset: 235 tires, 7.5" - 8.5" wide wheel
+45 to +49 offset: 245 tires, 7.5" - 9.0" wide wheel
+50 to +54 offset: 255 tires, 8.0" - 9.5" wide wheel
+55 to +59 offset: 265 tires, 8.5" - 9.5" wide wheel
+60 to +64 offset: 275 tires, 9.0" - 10.0" wide wheel
+65 or higher offset: 285 tires, 9.0" - 10.0" wide wheel

5. What is stagger and why do I need it?

If you look at the OEM wheel sizes above, you'll see that the OEM wheels have 1" of stagger for the AP1 and 1.5" of stagger for the AP2. That means the rear wheels are 1" wider than the fronts for the AP1, and 1.5" wider for the AP2. This is done in conjunction with the use of a wider tire, with a wider tread width in the rear. (See the stickies at the top of the Wheel and Tire Forum page for more info on proper tire tread widths.)

When choosing aftermarket wheels, wheels should be chosen that have stagger, like the OEM wheels. This allows you to use a wider tire on the rear, which is essential to proper handling and safety of the S2000. It is possible to run the same width wheels front and rear, and stagger only the tire sizes in a similar way to OEM tire sizes. However, this is not an ideal solution, because you may end up attempting to mount a tire on a wheel that's outside it's recommended width range. For instance, the popular 17x7" or 17x7.5" wheels that are so common. You could run the OEM AP2 tire sizes on these wheels, however the rear tire will be pinched on the rear wheel, because the OEM wheel is 8.5" wide. When pinching a wide tire on a narrow wheel, the intended performance and tread life of that tire may not be met.

So, when choosing aftermarket wheels, consider the tire sizes that will fit on them by looking at the specs of the tire you want to use (see the rim width specs), and try to maintain the stagger of wheel widths that the OEM sizes have. If anything, err on the side of a wider wheel and tire for the rear as this is the safer solution.

快速翻譯一下, 由上面的OEM數據可知, AP1原廠的後輪比前輪寬"1J" 而AP2則多了1.5J, 當你升級鋁圈時, 也盡量依此比例為依據升級, 這也關係S2000的安全與操控, 當然前後一樣也是可行的, 但你卻可能會超過原本建議的胎寬, 當然常見的17x7&17X7.5也可用於AP2的原廠規格輪胎, 但卻會讓輪胎"膨"出來, 那輪胎原本的性能壽命都會不如預期 (我是覺得超醜很像帶游泳圈)

SO~ 請先選好你要的胎寬再去考慮圈的組合, 也參考原廠前後輪規格比例, 才是安全的辦法

一般在S2000上, 如果安裝ET45的圈, 通常葉子板都會需要折進去來避免磨擦輪胎, 以目前台灣最常見的ET45來說, 風險都十分的高, 所以目前我考慮以後升級的尺寸大概會朝二個方向走

1. Advanti - F:7J ET45 205/45/17 R:8J ET45 235/40/17 (不過有沒有胎不知道... 最希望是有7.5J跟8.5J可選嚕)

2. Enkei RPF1 - F:8J ET45 214/45/17 R:9J ET45 245/40/17

Rays... Advan Racing... 再說再說....不然我心目中的offset值是前ET45後ET60....