To the north of the village of Tighnabruaich lies a splendid viewpoint overlooking Loch Riddon and the Kyles of Bute. The crags themselves lie directly below this viewpoint. Who could ask for a better location, close to the road, down hill walk-ins and breath taking scenery.
Topo available @ http://www.scottishclimbs.com/wiki/Tighnabruaich_Viewpoint
The crags themselves lie below Tighnabruaich Viewpoint some 5 miles north of the actual village of Tighnabruaich. Two methods can be used to approach from Glasgow. Either, drive to Gourock and take the small car ferry to Dunoon (where cheap ferry tickets can be bought from shop). From Dunoon follow the A815 North onto the B836 through Glen Lean to Auchenbreck. Drive a short way up the A886 turning left onto the A8003 leading to Tighnabruaich. Alternatively, take the A82 out of Glasgow past Loch Lomond to Arrochar. Drive through rest and be thankful pass toward Glen Kinglas where a left turn onto the A815 is made. The A815 is followed to Strachur where a right turn is made onto the A886 through Glendaurel. Finally a right turn can be made onto the A8003 leading to Tighnabruaich. If in doubt find a map and look-up (NS 000 775), though most good maps have the viewpoint itself marked.
Please park at the extremities of the layby. An amazing amount of traffic stops in this area, including multiple tourist coaches. Don't make their stay any longer due to negotiation of bad parking.