Start the clothing pile with what you will wear to bed. Put dry sleep clothes and socks in a separate bag, then work out the riding layers and camp clothes around them. This makes the first decision simple. The shirt you sweat through while riding is not the only shirt available when the tent goes up.
Protective jackets, pants, gloves, and boots belong with riding gear. Here the question is what goes underneath, what you change into at camp, and how often you can wash it. A week away does not automatically need seven changes of clothes, but it does need an honest laundry plan.
Pack to the next wash
For a short summer weekend, start by laying out your riding base layers, a change of underwear and socks, dry sleep clothes, and an evening layer suited to the forecast. Add camp pants or shorts if you want to take off the riding pants. Treat this as a draft packing list, then adjust it for the weather and your own needs.
A longer trip changes the rotation more than the number of garments. Work out where you expect to do laundry and how many days come before it. A motel with a washer midway through the route can justify carrying less. A vague hope of rinsing clothes at camp cannot, especially if every departure is early and the forecast is wet.
Underwear and socks are sensible places to keep an extra change. Another bulky sweatshirt is harder to defend if a fleece and shell already cover the evening. If you want a clean shirt for dinner in town, carry it and count the space it takes.
Choose layers you can wear together
For cold or wet camping, wool and synthetic layers are useful starting points. Denali National Park's gear guidance recommends warm, quick-drying clothing and wool or synthetic socks, and advises against cotton for those conditions. A favorite cotton T-shirt can still be a deliberate town-clothes choice; do not make it your only cold-weather layer. NPS clothing guidance.
Start with a shirt that is comfortable under your jacket and whose drying behavior you know. Check seams beneath armor and the collar against your neck. A fabric specification will not identify an irritating seam.
Try the warmest planned combination beneath the riding gear. Zip everything and sit on the motorcycle. If a puffy jacket crowds your shoulders or the elbow protectors, carry it for camp and use a layer that fits for riding. A thinner fleece may be easier to wear under the jacket even if you prefer the puffy once the motorcycle is parked.
For cold mornings, add a warm hat and camp gloves that let you fasten the tent bag. Those gloves also let you leave a damp riding pair to air until departure.
Socks and shoes take more thought than spare shirts
Try riding socks inside the actual boots, including any thicker pair intended for cold weather. Extra thickness can make a previously comfortable boot tight.
At camp, take the boots off and change damp socks. Keep the sleep pair separate from the pair you wear while walking around wet grass. It is easy to use the dry reserve by accident during the hour between arriving and going to bed.
Camp shoes depend on how you spend the evening. Compact sandals may suit a warm developed campground. A closed shoe may be more useful for walking into town or around a rough campsite. If you also plan a substantial hike, make that a separate footwear decision rather than assuming a light camp shoe will cover it.
Try packing the shoes before buying a second pair for the trip. Keep their soles away from clean clothes.
Washing is only half the job
Hand-wash one of your intended riding shirts at home and hang it as you would on the trip. Notice how long the cuffs and collar remain damp. That trial will not reproduce every campsite, but it can expose a garment that makes your planned overnight laundry routine unrealistic.
On the road, wash early enough to leave drying time, and keep a wearable set while the other dries. Use the site's laundry facilities where available. For camp washing and wastewater disposal, follow the site's rules and the guidance in hygiene and sanitation.
Keep damp laundry out of the sleep-clothes bag. Give it air when you stop instead of forgetting it sealed in a pannier for the rest of the week. Follow garment care instructions for drying rather than improvising with the motorcycle's exhaust or a stove.
When you pack in the morning, check the sleep clothes first. If you wore them because everything else was wet, plan a drying or laundry stop that day. The next campsite needs a dry change as much as the last one did.