Looking for tyre recommendations

[The Marmot]

Yes, that's what I feared NZ XR6. I certainly don't want to get into changing suspension struts or something as well. I've made a bit of progress in terms of noise abatement. I've purchased a boot shelf (or whatever you call it) because the vehicle came without one. That now seals off the very large rear cargo area, and I have found that by putting a thick carpet over the top, quite an amount of resonance seems to have been removed. I will check with the dealer about the effect of changing the wheel and tyre size before I take any further steps. Thanks for that useful advice.