Originally Posted by
eduskator
They are the same. Hookless rims comes on SLR1 wheels which are included in the Advanced Pro lineup (disc or non disc). Your wife probably has the ''regular'' TCR Advanced with the PR-2 aluminum wheels.
Here is the verbatim response from Giant:
Thank you for contacting us. I believe you were looking at the new hookless SLR 1 rims that are available in Canada right now. The reason there is only certain tire compatibility is because those rims are hookless. The only hookless rims on 2020 bikes were the ones on with Cadex wheels. If you have a 2020 model bike with SLR 1 wheels, then you don’t need to reference the hookless tire compatibility chart.