The standard card size for Backroadmapbooks GPS maps is 8GB.
The map data on the card is approx 3.5GB for our largest combo map.
*Older version may be 2-4GB cards.

16GB card - A larger card of 16GB can be purchased during checkout for $19.95.
32GB card - A larger card of 32GB can be purchased during checkout for $29.95.

When updating your maps the option to update to a larger card is not available due to the update discount being applied.
If your updating and want to update to a larger card please call us to take your order over the phone.\\