I think that my car is being a bit mean with its speed readings, especially at higher speeds. At an indicated 75 i'm absolutly howling past the wagons, it seems to rev a little harder than my old one i have to admit!

 

Could anyone tell me what rpm the car should be doing @ say 70 in 5th? then i can see if im imagining things! My car is a TT manual (i assume it has a TT diff!)

 

The other evidence ive got to support this is i thought that in theory if a standard car could pull to the redline in 5th it would be doing 186mph. So at 3500rpm it should do 93mph. Mine reads more like 83!

 

Also to answer another question, does anyone have the stock tyre sizes for a jap TT? (225/45/16?)

Borrow/Use a sat nav and check your speed that way - i know its not perfectly exact, but it will let you know if your speedo is out.

TT manual @ 70mph should be 2800rpm

TT manual @ 70mph should be 2800rpm

 

Mine is that rpm at 75/76mph (Sat Nav not speedo)

 

3000rpm your looking at just around 82mph from what i remember!

did a speedo check today with the satnav, had thought about doing this before i read the posts lol. It turns out its a bit out the wrong way. An indicated 70 is more like 74 genuine. On my private track an indicated 100 is actually 106! Where as normally speedos over read so its compounded! LOL

also to answer another question, does anyone have the stock tyre sizes for a jap tt? (225/45/16?)

 

 

225/50/16