Wet performance is really two questions, and separating them is most of the answer.
Wet traction is grip on a road that is merely damp, and it comes from compound and siping. Hydroplaning resistance is what stops you floating on standing water, and it comes from tread pattern and void. An all-terrain is average at the first and often good at the second, which is why owners describe them so inconsistently.
Across 5,950 all-terrain owner reviews, wet traction is praised in 12.3% and raised as a complaint in 2.9%. But that rate is not stable: complaints run at 1.3% when the tires are new and 11.0% between 30,000 and 50,000 miles. Wet grip is the thing that goes first.
Two different questions
Most guides treat wet weather as one property. It isn’t, and the two halves are governed by different parts of the tire.
| Wet traction | Hydroplaning resistance | |
|---|---|---|
| What it is | Grip on a damp road | Not floating on standing water |
| Comes from | Compound and siping | Void ratio and channel geometry |
| All-terrains are | Average, sometimes poor | Often good |
| Why | Compound is tuned for cut resistance, not conformity | Open patterns move water well |
Swipe the table sideways to see every column.
The compound conflict is the root of it. An all-terrain compound has to survive rock and gravel without tearing, which means resisting cuts. Wet grip needs the opposite: a compound soft enough to conform to the road’s micro-texture and displace the thin film of water on it. A tire cannot be optimised for both.
Hydroplaning is a different mechanism entirely. Water has to go somewhere, and an open lug pattern with deep voids has more somewhere than a tightly ribbed highway pattern. This is why an all-terrain can feel less sure-footed in drizzle and more sure-footed through a flooded dip on the same drive.
What owners report
Owners raise wet traction in 15.2% of reviews, four times more often approvingly than not:
| Share of reviews | |
|---|---|
| Raised approvingly | 12.3% |
| Raised as a complaint | 2.9% |
| Praise per complaint | 4.3× |
That is a better showing than the category’s reputation, and it comes with a caveat we should state plainly: we have no all-season reviews to compare against. These figures describe how all-terrain owners feel about their own tires, not how those tires stack up against something milder. The retailers’ scores are supposed to answer that comparison, and further down we show why they can’t.
The complaint that arrives with wear
The headline rate hides the most useful thing in the data.
Wet complaints run at 1.3% below 5,000 miles and 11.0% between 30,000 and 50,000. That is an eightfold increase, and it is the steepest curve of any theme we track, steeper than noise and steeper than tread life.
The mechanism is direct. Hydroplaning resistance depends on how much water the grooves can move, and groove depth is exactly what wear takes away. A tire that starts with 16/32″ of tread and reaches the legal limit at 2/32″ has lost seven eighths of its water capacity while still being legal to drive.
Praise, meanwhile, stays roughly flat across every band. Owners who are happy stay happy; the ones who aren’t are discovering something that changed underneath them.
The practical version: the wet performance you evaluate in the first month is not the wet performance you will have at 35,000 miles. If you drive in rain regularly, tread depth is worth watching long before the tire is legally worn out. Four thirty-seconds is the usual threshold for wet driving, against the two that the law requires.
Which all-terrain
As with every other dimension we have measured, the model matters more than the category:
| Tire | Reviews | Praised | Complained about |
|---|---|---|---|
| Pirelli Scorpion All Terrain Plus | 225 | 18.2% | 3.1% |
| Toyo Open Country A/T III | 845 | 17.2% | 4.3% |
| Falken Wildpeak AT4W | 1,200 | 16.7% | 2.8% |
| General Grabber A/TX | 531 | 10.7% | 2.4% |
| BFGoodrich All-Terrain T/A KO3 | 1,574 | 10.2% | 2.4% |
| BFGoodrich All-Terrain T/A KO2 | 1,575 | 8.2% | 2.9% |
Swipe the table sideways to see every column.
Praise runs from 8.2% to 18.2%, more than double at one end of the list than the other. Complaint rates are tighter, from 2.4% to 4.3%, which suggests the difference is more about how often a tire impresses than how often it disappoints.
Why the scores can’t help here
If you want to compare an all-terrain against an all-season for wet weather, the obvious source is the retailers’ wet score. It does not work, and the reason is instructive.
Wet scores run from 4.20 to 4.50 across categories whose tread depth runs from 10.1/32″ to 20/32″. A mud-terrain carries twice the tread of a touring tire, is built on a completely different compound, and scores a tenth of a point lower.
Nobody believes those tires perform within a tenth of each other in the rain. What the scores record is whether an owner felt they got what they expected, and a mud-terrain buyer is not expecting touring-tire wet grip. Satisfaction and performance come apart hardest exactly where the expectations differ most.
So the wet column is the one place in these ratings we would tell you to ignore outright. Use it to compare tires inside one category, where buyers want similar things, and not at all across categories.
P-metric against LT
If your placard permits both, this choice affects wet behaviour, and it cuts both ways.
Across 227 cases where one manufacturer sells one tire in one size in both constructions, the light-truck version carries 22% more tread depth and a casing rated to hold 62% more pressure.
- On a merely damp road, passenger construction usually wins. Shallower blocks move less under braking and steering, so the contact patch stays where you put it. A softer casing also conforms better to the road surface.
- In standing water, the LT version wins. More groove depth is more water capacity, and that is the whole mechanism of hydroplaning resistance.
Which matters more depends on which you meet more often. For most drivers the answer is the damp road, which is why passenger construction is the usual recommendation where the placard allows it. Our LT against passenger comparison covers the load implications, which have to come first.
If wet matters most
- An all-season or highway tire will be better. If wet grip is your first priority and off-road capability is not, that is the honest recommendation.
- Among all-terrains, choose the specific model. Wet praise varies more than twofold across six tires in the same category.
- On-road all-terrain over off-road, where the pattern is a hybrid of rib and lug rather than fully open.
- Passenger construction over LT, unless you regularly meet standing water.
- Replace earlier than the law requires. Wet complaints multiply eightfold by 30,000 to 50,000 miles, and 4/32″ is the usual threshold for wet driving against the 2/32″ legal minimum.
Key takeaways
In short
- Wet traction and hydroplaning resistance are different properties. All-terrains are average at the first and often good at the second.
- Owners praise wet traction in 12.3% of reviews and complain in 2.9%, a ratio of 4.3 to one.
- Complaints climb from 1.3% when new to 11.0% between 30,000 and 50,000 miles, the steepest curve of any theme we track.
- Groove depth is what evacuates water, and groove depth is what wear removes.
- Wet praise runs from 8.2% to 18.2% across six tires carrying the same category label.
- Retailer wet scores run 4.20 to 4.50 across categories with twice the tread depth difference. Ignore that column across categories.
- Passenger construction usually wins on damp roads; LT wins in standing water.
Common questions
Are all-terrain tires good in the rain?
Adequate, and better than the reputation suggests. Owners praise wet traction in 12.3% of reviews against 2.9% complaining, a ratio of more than four to one. But wet performance is really two properties: grip on damp roads, where all-terrains are average because their compound is tuned for cut resistance, and hydroplaning resistance, where their open patterns often do well.
Do all-terrain tires get worse in the rain as they wear?
Sharply. Wet complaints run at 1.3% of reviews below 5,000 miles and 11.0% between 30,000 and 50,000, an eightfold increase and the steepest curve of any theme we track. Groove depth is what moves water out of the contact patch, and it is exactly what wear takes away. A tire at the 2/32 inch legal limit has lost most of its water capacity while still being legal.
Are all-season tires better than all-terrains in wet weather?
For grip on damp roads, generally yes, because their compounds are tuned for conformity rather than cut resistance. We can’t quantify the gap: our review data covers all-terrain tires only, and the retailers’ wet scores are useless here, running 4.20 to 4.50 across categories whose tread depth differs twofold. If wet grip is your first priority and you don’t need off-road capability, an all-season or highway tire is the better choice.
Should I use P-metric or LT sizes for wet driving?
It depends which condition you meet. Passenger construction carries about 22% less tread depth and a softer casing, which helps on merely damp roads because blocks move less under braking. LT construction carries more groove depth, which helps in standing water. Most drivers meet damp roads more often, so passenger construction is the usual answer where the placard allows it.
Which all-terrain tire is best in the rain?
The category won’t tell you. Wet praise runs from 8.2% for the BFGoodrich KO2 to 18.2% for the Pirelli Scorpion All Terrain Plus among six tires in the same category, so compare specific models. Bear in mind the Pirelli rests on 225 reviews against more than 1,500 for each BFGoodrich.
What tread depth do I need for wet driving?
4/32 inch is the usual recommendation for wet conditions, against the 2/32 inch legal minimum. The gap matters because water evacuation falls away with depth long before the tire is legally worn out, and our data shows wet complaints multiplying eightfold by the 30,000 to 50,000 mile band.
Where this comes from. Owner figures are drawn from 5,950 reviews of six all-terrain tires, classified against a fixed theme taxonomy. All six are off-road all-terrains and all are well-regarded models. We hold no all-season or highway tire reviews, so no direct comparison between categories is possible from this data. Mileage is self-reported and appears in about half the analysed reviews. Retailer scores are published figures read by column name and measure owner satisfaction rather than measured wet performance. Construction figures come from 227 matched pairs where one tire is sold in one size in both passenger and light-truck construction.
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