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Discussion Starter · #1 · (Edited)
Tried search- no luck.
What rpms does a SMT have at 70mph? lower than stock 5 sp?

I'm about to pull the trigger on a 2003 SMT w/33K,
never had SMT- I'm counting on the low miles = no issues
(had two 2000 5-speeds prior to this)

according to Wiki :
- SMT 6th gear: 0.725 and Final drive: 4.312
- 5 speed: 5th gear: 0.815 and Final Drive: 4.312

--- was 6-sp avail in US, or 5sp only?
 

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It depends on which 6 speed you are talking about. The Euro spec 6 speed (C60) with the 3.91:1 final drive has the engine running about 3000 rpm at 70 mph. I don't know the engine speeds at 70 mph for the other two 6 speeds that people here use for the Spyders (MT)? The US spec cars in MT never came with a 6 speed, only the 5 speed, but it's a popular upgrade. A lot of people here will tell you post 03 SMT can be very reliable, but an be expensive if it needs repairs, and finding someone skilled to repair these may be a challenge.

I reread your question after writing, so I don't know what the rpms are for an SMT at 70 mph, but I think they are a little lower than for a 5 MT, maybe 3200 or so (I don't have an exact figure though).
 

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I have a 2003 with SMT. At 65mph it's about 3000 rpm. So I'd say at 70, maybe 3200. My car has been perfectly reliable. I'm currently at 32k miles.
 

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For the record, 5 speed RPM in 5th is easy to calculate: it's MPH / 2 (plus two 0's). 70mph = 3500 rpm (70 / 2 = 35 * 100 = 3500). Nearly exact.

OTOH, euro 6 speed is off by a bit. 70mph = ~2900 or ~2950 rpm (not quite 7:300)
 
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