Originally Posted by crosscats

Not at all - the load rating is in kg so, as the Crossfire only weighs about 1450kg, divide by four = 362.5kg which is well within the capability of either tyre, even under extra load during hard cornering etc.
The 'Y' speed rating is also OK, unless you're planning to exceed 186 mph...!
In case you haven't seen it, you might find this - and realated pages - helpful:
Tyre Load Rating | Blackcircles.com