Stock Tyre Size for E90 LCI ?

nkglfrs

Well-Known Member
Does anyone know what is the stock tyre size of E90 LCI 318i?

mine is 225/45/R17, but realized that the speedometer is different from that displayed on the GPS.

When i am going at 120km/h, the GPS shows 114 or 115 only
 
Re: Stock Tyre Size for E90 LCI ?

GPS is more accurate - it doesn't have the mechanical variables, such as alignment issues, tyre pressure and even factory calibration issues....
 
Re: Stock Tyre Size for E90 LCI ?

Normally, a BMW's speedo is calibrated to be around 5km/h faster than the actual speed (which is shown on your GPS).

I am not sure about the new F series or new cars though.
 
Re: Stock Tyre Size for E90 LCI ?

Thanks for the reply.

In my previous Toyota Altis, speedo and GPS is only about 1km/h difference. I am quite surprise that BMW has such a huge gap.

So for police with radar on overhead bridge, is the speed they detect same as speedo or closer to GPS speed?
 
Re: Stock Tyre Size for E90 LCI ?

nkglfrs said:
So for police with radar on overhead bridge, is the speed they detect same as speedo or closer to GPS speed?

Of course GPS speed lah !!!
 
Re: Stock Tyre Size for E90 LCI ?

stock size seems to be 205/55/16 for this car. but base on your current tyre size, it's only 0.4% differences on the circumference, so shouldn't affect the speedo much at all.
 
Re: Stock Tyre Size for E90 LCI ?

dgyew;1097923 said:
stock size seems to be 205/55/16 for this car. but base on your current tyre size, it's only 0.4% differences on the circumference, so shouldn't affect the speedo much at all.

Thanks bro !
 
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