Recently road from Bewdley, northern Worcestershire, to Norwich, about 160 miles. Just over 1 full tank of fuel, a GT125 2004, with recent MOT and service, including brand new OEM exhaust, (and Motobatt, weird fit but very reliable)... very smooth sailing, pleasant scenery and hearty performance, like having a new machine until about the last 20 miles...
Now I have a high pitchdd rattle somewhere below... Any part known to take a hit like that when these Gran Tourismos go grand touring?