又要請大家幫忙...

stevekeung

換左GR90一個月，之前冇咩留意，尋日見前呔好似扁扁地，去油站CHECK又冇事。
RG1 205/60/R16 跟廠建議打前220Kpa (32psi), 後打240Kpa(35psi)

師兄們有冇相同情況? 想問係咪GR90本身的問題, 有冇需要加大少少前呔呔氣?

sammykwan

for such, spec 205 wide and 60 profile tire wall....., 扁扁地 is very normal.

But you can put a bit higher pressure. Since the weather is getting hot, don't fill over 36psi.

fw18

for such, spec 205 wide and 60 profile tire wall....., 扁扁地 is very normal.

But you can put a bit higher pressure. Since the weather is getting hot, don't fill over 36psi.
sammykwan 發表於 16-5-2011 11:24

又係見扁扁地，我尋日打咗37....

sammykwan

又係見扁扁地，我尋日打咗37....
fw18 發表於 16-5-2011 11:29

if you filled 37psi at hot tyre, ok...but if you filled the tyre at cold tyre...then when the tyre heat up, the pressure could be over 45psi or even higher......

stevekeung

多謝師兄快速回覆, 會試打34psi 先。萬分感激!

MosTa

I normally, add up to 34 psi front and 37 psi rear in hot condition.

stevekeung

5# 掌摑王

應該又唔係...呢條係原廠24z嗰條鈴，之前用yokohama冇發現呢個問題，唔知係咪天氣定GR90較軟身?

stevekeung

7# MosTa

八掛一下，RK原廠建議同RG有冇唔同?

fw18

7# MosTa

八掛一下，RK原廠建議同RG有冇唔同?
stevekeung 發表於 16-5-2011 11:48

rk 15" f 32, r 35

fw18

if you filled 37psi at hot tyre, ok...but if you filled the tyre at cold tyre...then when the tyre heat up, the pressure could be over 45psi or even higher......
sammykwan 發表於 16-5-2011 11:33

當然係凍呔啦....

不過，成日打氣，都唔覺條呔氣熱喎(因通常會先放多2-3磅氣，先從新再打)，行幾多先可以叫熱呔?

sammykwan

當然係凍呔啦....

不過，成日打氣，都唔覺條呔氣熱喎(因通常會先放多2-3磅氣，先從新再打)，行幾多先可以叫熱呔?
fw18 發表於 16-5-2011 12:08

if you have a TPMS, we can see the temperature and pressure can increase 5-10psi from cold to hot easily.

fw18

if you have a TPMS, we can see the temperature and pressure can increase 5-10psi from cold to hot easily.
sammykwan 發表於 16-5-2011 12:13

Maybe the trip is short, about 20km so the tyres dont heart up enough....