

| Subject: | Re: Safe RPM's |
| From: | Bill Davidson |
| Date: | Sat, 14 Oct 2000 21:17:42 -0700 |
> I have a question as to what my RPM's should be at speed. I saw a post > earlier where someone said they did 65 mph at 3400 rpm. I have an 89GL > automatic, with alloy wheels, Michelin All Season RainForce 205-70/14 tires > (came with the vehicle.) The engine is turning approximately 3600 rpms at 60 > mph, approximately 4K at 70 mph. This puts it on the upper limit of the > "green" on the tach. Is this normal for an automatic? That's pretty much what my 90 Westy Syncro runs.... but these reports are not easy to compare... like was there a tail wind? head wind? perfectly level?.... I usually drive > between 65 and 75 and get 17-18 miles per gal. I'd like to drop the rpms > (longer engine life), but hate paying $$$ for larger rims, etc. Larger rims with larger diameter tires will cause the engine to work harder in the lower gears... and have slower acceleration... it's already a dog on acceleration IMHO, why make it worse? > TIA for any responses. > Ken Hartz >
Have something to add on this topic today? Revive this thread in the forum »